President Trump, in part, was right. There is blame to go around for the unrest in Charlottesville. There is fear, intolerance, demonization and growing hatred on both the extreme left and the extreme right. But despite what Trump has claimed, repeatedly, in his public statements since the tragic events there, the willingness to employ organized violence to achieve political goals remains a signature quality of only one side. And it’s not the left. Extremism on the left is real. It can be seen in attempts to stifle the free speech of conservative speakers on university campuses (as at Middlebury and...