Democrats don't have a fix for their extremism problem

Democrats have an extremism problem, and it’s not clear how they can solve it. After yet another gunman allegedly tried to assassinate President Donald Trump at last weekend’s White House Correspondents’ Dinner, liberals nobly renewed their commitment to moderation. “We need LESS violence in America, not MORE violence in America,” wrote CNN’s Van Jones. Quite right. But the American left has not exactly put itself in a good position to calm down its radicals.You can court bloodthirsty Marxists,...