Twenty-year-old Tyler Peterson had gone to the party early Sunday to make amends with his ex-girlfriend, a friend of Peterson's told The Milwaukee Journal Sentinel.
Peterson lost control after people called him a "worthless pig," Mike Kegley told the paper.
Peterson left and got a police-style AR-15 rifle from his truck, forced his way back into the apartment and fired about 30 rounds at about 2:45 a.m. (3:45 a.m. ET). Six people were killed; one person survived and is hospitalized, Attorney General J.B. Van Hollen said at a Monday news conference.
"They called me a worthless pig... WAIT! I know, I'll kill them all! That'll teach them I'm not worthless!"
Worse yet, the extreme and nasty voices slowly rising on the far right in approval of his actions. Facism is a terrible thing folks, and those that would approve of such a course of action are just that. Totalitarian Facists.