Apparently, the way someone animates violence against a colleague matters more than the fact they’re doing it in the first place—at least, if you’re a Republican in the U.S. House of Representatives. About two weeks ago, members of the House censured Rep. Paul Gosar, an Arizona Republican who tweeted an animated video that portrayed him killing Rep. Alexandria Ocasio-Cortez, a New York Democrat and progressive star. The video, to every Democrat’s mind and to GOP Trump critics Reps. Liz Cheney and Adam Kinzinger, crossed a line. Privately, Republicans on the Hill have long considered Gosar a fringe figure whose casual...