"No Trump! No wall! No U.S.A. at all." This was the chant of the violent, black-masked thugs who descended on an otherwise peaceful protest in Berkeley over the weekend. And it gives you a window into the tactics of the violent fringes of the Left. They attempt to lure in normal, reasonable people -- which they most certainly are not -- by showcasing a common enemy, such as racism or fascism. But that's just a sweetener for their real agenda item. Lots of normal, reasonable people oppose Donald Trump. Many of them oppose the border wall, too. But the third...