Ian L. Stawicki, who shot five people to death Wednesday in Seattle before putting a bullet in his own head, had a long history of violence and mental problems, though not the kind that show up on official records. He was charged with misdemeanor assault in 2008 and 2010, but charges in both cases were dismissed after first his girlfriend, whose nose he allegedly bloodied, and then his brother declined to testify against him. Other charges reported by Seattle police,... (GunPolicy.org)