Political violence is threaded through recent US history. The motives and justifications vary

The attacks on two Democratic Minnesota state lawmakers at home are the latest in a grim and alarming spike in political violence. One lawmaker and her husband were killed while a second one and his wife were gravely wounded.

​The attacks on two Democratic Minnesota state lawmakers at home are the latest in a grim and alarming spike in political violence. One lawmaker and her husband were killed while a second one and his wife were gravely wounded.