WASHINGTON - Les cloches des églises de Newtown, au Connecticut, ont retenti vendredi matin à 9h30, pour rendre hommage aux 20 enfants et six adultes tués exactement une semaine plus tôt par un tireur fou dans une école primaire de la ville.

Les cloches ont sonné 26 fois, à la mémoire des vies perdues à l'école Sandy Hook. Le tireur avait également tué sa mère avant le massacre et s'est enlevé la vie à l'approche des policiers.

Des cérémonies similaires étaient prévues ailleurs au pays, dont un moment de silence à la Maison-Blanche auquel devait participer le président Barack Obama.

Ce dernier a de nouveau promis d'agir pour empêcher de tels massacres, affirmant aux signataires d'une pétition en ligne qu'ils ont été entendus.

Dans une vidéo diffusée vendredi, le président Obama révèle que son administration a été inondée de messages d'appui et de solidarité dans la foulée de la tuerie de Newtown.

Il s'est dit particulièrement encouragé de constater que plusieurs propriétaires d'armes sont d'avis que les États-Unis peuvent faire plus pour empêcher de tels événements de se produire.

«Je ferai tout en mon pouvoir comme président pour faire progresser ces efforts car même s'il n'y a qu'une seule chose que nous pouvons faire en tant que pays pour protéger nos enfants, nous avons le devoir d'essayer», a dit M. Obama.

Dans la vidéo diffusée vendredi, le président répond à une pétition «We The People» qui a recueilli quelque 200 000 signatures sur le site Internet de la Maison-Blanche, en faveur d'un contrôle plus étroit des armes à feu. D'autres pétitions du même genre ont amassé plus de 400 000 signatures.

M. Obama a commencé à jeter les fondations d'une initiative pour resserrer le contrôle des armes, améliorer les soins en matière de santé mentale et réexaminer la glorification des armes et de la violence. Le vice-président Joe Biden dirigera un groupe de travail composé de responsables gouvernementaux et de conseillers indépendants qui doit soumettre des recommandations d'ici le mois de janvier.

Le groupe de M. Biden pourrait remettre en place l'interdit sur les fusils d'assaut de style militaire qui est venu à échéance en 2004, combler les failles qui permettent à certains acheteurs d'armes d'éviter une enquête sur leurs antécédents et imposer des restrictions sur les chargeurs de grande capacité.

Les mesures de contrôle des armes à feu ont rencontré une opposition robuste au Congrès au cours de la dernière décennie, mais le président Obama a indiqué que cela se trouvera au sommet de ses priorités l'an prochain. Sa vidéo invite les Américains à s'impliquer.

«Si nous voulons réussir, nous aurons besoin d'un effort soutenu des mères et des pères, des filles et des fils, des policiers et des propriétaires d'armes, qui vont organiser, s'exprimer, communiquer avec leurs représentants au Congrès aussi souvent qu'il le faudra, se tenir debout et dire 'C'est assez' au nom de tous nos enfants», a lancé le président.

Les photos du discours d'Obama lors de la vigile à Newtown, compilées par nos collègues du HuffPost américain
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  • Barack Obama

    President Barack Obama arrives at the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    President Barack Obama greets Gov. Dannel Malloy during his arrival at the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)

  • Barack Obama

    President Barack Obama pauses during a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Barack Obama

    President Barack Obama walks off after delivering a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    President Barack Obama speaks during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Barack Obama

    President Barack Obama greets State Senate Minority Leader John McKinney, R-Fairfield, on his arrival, before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting inside the Newtown High School auditorium in Newtown, Conn., Sunday night, Dec. 16, 2012. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)

  • Barack Obama

    President Barack Obama pauses as he delivers a speech during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    President Barack Obama speaks during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)

  • Barack Obama

    President Barack Obama pauses as he delivers a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    Residents pray during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Barack Obama

    President Barack Obama pauses as he delivers a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Barack Obama

    President Barack Obama pauses as he delivers a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • US-SCHOOL-SHOOTING-MEMORIAL

    US President Barack Obama makes his way off the stage after speaking at a memorial service for the victims and relatives of the Sandy Hook Elementary School shooting on December 16, 2012 at the Newtown High SChool in Newtown, Connecticut. Twenty-six people were killed when a gunman entered Sandy Hook Elementary and began a shooting spree. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

  • Barack Obama

    President Barack Obama walks off stage after delivering a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    President Barack Obama pauses as he delivers a speech during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • US-SCHOOL-SHOOTING-MEMORIAL

    US President Barack Obama pauses as he speaks during a memorial service for the victims and relatives of the Sandy Hook Elementary School shooting on December 16, 2012 in Newtown, Connecticut. Twenty-six people were killed when a gunman entered Sandy Hook Elementary and began a shooting spree. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

  • Barack Obama

    President Barack Obama returns to the White House in Washington after attending an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jacquelyn Martin)

  • Barack Obama

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    Air Force One carrying President Barack Obama is seen leaving Bradley Air National Guard Base in East Granby, Conn., Sunday, Dec. 16, 2012. The president was in Connecticut to attend a memorial for the victims of the Sandy Hook Elementary School shooting where 26 people, including 20 children, were killed Friday. (AP Photo/Jessica Hill)

  • Julie LaPak, right, and Scott Emslie, of Newton, Conn., watch President Obama delver his speech at the Iron Bridge restaurant, Sunday, Dec. 16, 2012 in Newtown, Conn. (AP Photo/Mary Altaffer)

  • A mourner looks on during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Surendra Khera, left, Manjaree Daw, center and Indira Khera, of Simsbury, Conn., watch President Obama deliver his speech at the Iron Bridge restaurant, Sunday, Dec. 16, 2012 in Newtown, Conn. The president spoke during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Mary Altaffer)

  • Barack Obama

    Residents look on as President Barack Obama delivers remarks at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • A mourner weeps while listening to President Barack Obama speak on a loudspeaker while sitting outside a memorial at Newtown High School for the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. (AP Photo/David Goldman)

  • C.J. Singh, center, and other members of the Sikh community hold a candlelight vigil outside Newtown High School before an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Residents hold a candlelight vigil outside Newtown High School after President Barack Obama delivered remarks at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • A young boy places a candle with others at the base of a flagpole outside Newtown High School before an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Eknoor Kaur, 3, stands with her father Guramril Singh during a candlelight vigil outside Newtown High School before an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Members of the Sikh community hold a candlelight vigil outside Newtown High School before an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • U.S. Sen. Joseph Lieberman, I-Conn., top right, Rep. Rosa DeLauro, D-Conn., left, Sen-elect Chris Murphy, center, and Lt. Gov. Nancy Wyman, right, wait for the arrival of President Barack Obama before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting inside the Newtown High School auditorium in Newtown, Conn., Sunday night, Dec. 16, 2012. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)

  • Residents look on during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is schedule to speak during the vigil. (AP Photo/ Evan Vucci)

  • Barack Obama

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is scheduled to speak during the vigil. (AP Photo/ Evan Vucci)

  • Barack Obama

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is to scheduled to speak at the event. (AP Photo/ Evan Vucci)

  • Residents look on during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is scheduled to speak during the vigil. (AP Photo/Evan Vucci)

  • Barack Obama

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • People wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Barack Obama

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • People arrive at Newtown High School to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Kayla Hopson and her daughter Lilliana, 9, left, and Janine Caswell and her daughter Genesis, 8, stand wrapped in Red Cross blankets to protect themselves from the cold, rainy weather as they wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Residents wait for the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Eight-year old Shayne Frate, a third grade student at Sandy Hook Elementary School, hangs from her mother Valerie's back, wrapped in a Red Cross blanket to protect her from the cold, rainy weather, as she waits in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • People wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown on Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Residents wait for the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Red Cross volunteer Michael Cianciolo distributes blankets to protect people from the cold, rainy weather as they wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Red Cross personnel provide blankets, water, snacks and even stuffed toys to keep people comfortable as they wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Residents wait for the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Barack Obama

    Residents greet each other before an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Barack Obama

    Residents greet each other before an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • A U.S. flag flies at half staff outside the Newtown High School before President Barack Obama is scheduled to attend a memorial for the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/David Goldman)

  • People wait in line to enter Newtown High School for a memorial vigil attended by President Barack Obama for the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/David Goldman)