SOURCE: Associated Press and other news reports, Violence Policy Center, Brady Campaign to Prevent Gun Violence, Law Center to Prevent Gun Violence. GRAPHIC: Bonnie Berkowitz, Alberto Cuadra, Cristina Rivero, Laura Stanton and Sisi Wei - The Washington Post. Published July 20, 2012. Updated Dec. 14, 2012.
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Note: Several of these gunmen killed other people in the hours or days preceding their mass shootings.Can't embed the (semi-interactive) graphic, but it's a good one. The above & the Texas Tower of 1966 are the only two of the top 12 to have happened before 1984; half of them since 2007. Three of 12 in Texas, two in Colorado. Trending?