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24-hour vigil urges action on gun control legislation

Kevin Lamarque / Reuters

Volunteers place crosses on the National Mall in front of the U.S. Capitol on April 11. Activists were holding a 24-hour vigil featuring a gathering of Newtown clergy and 3,300 grave markers to "remind Congress action is needed on gun violence prevention." The number 3,300 represents the supposed number of people who have died as a result of gun violence since the tragedy in Newtown, Conn. 

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