Two people hug early Tuesday after reaching safety outside the Garden State Plaza Mall in Paramus, N.J. A gunman fired several shots there Monday night, sending shoppers and employees scrambling. No one was hurt. Hours later, the suspected gunman's body was found. Police believe he shot himself. Julio Cortez/AP hide caption

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Workers emerge from a building after a deadly shooting at the Washington Navy Yard on Monday. There are multiple injuries and deaths, and one gunman is dead. Police say they are searching for two other "potential" shooters. Alex Wong/Getty Images hide caption

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Hadiya Pendleton. Courtesy of Pendleton family via the Chicago Tribune /MCT /Landov hide caption

toggle caption Courtesy of Pendleton family via the Chicago Tribune /MCT /Landov

William Spengler, in an undated image released by the Monroe County (N.Y.) Sheriff's Office. Reuters /Landov hide caption

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Jacob Tyler Roberts. Clackamas County (Ore.) Sheriff's Department hide caption

toggle caption Clackamas County (Ore.) Sheriff's Department

In shock: The scene outside a Minneapolis business Thursday. A gunman killed four people, wounded four others and then killed himself. Richard Tsong-Taatarii/Minneapolis Star Tribune/MCT /Landov hide caption

toggle caption Richard Tsong-Taatarii/Minneapolis Star Tribune/MCT /Landov

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