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

itoggle 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

itoggle caption Reuters /Landov

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

itoggle 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

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