Gun rights activists for years have fought for the free proliferation of firearms throughout the U.S., perhaps subconsciously imagining they were only arming themselves. But a shooting incident in Virginia on Wednesday, in which a 66-year-old white man named James T. Hodgkinson fired a rifle multiple times on a baseball field and seriously injured House Majority Whip Steve Scalise and others, illustrated this point: Liberals, who traditionally support gun control, also may use gun violence when they feel helpless.