Antifa violence will feature prominently in the lead-up to this year’s election. The left-wing movement’s numbers skyrocketed following President Trump’s 2016 victory and campaign staffers for Bernie Sanders have already predicted serious street violence should Trump win again. Same goes for a Sanders primary loss. As another staffer recently predicted, this year’s Democratic National Convention in Milwaukee will be rife with attacks on police; enough, apparently, to make the infamous 1968 convention in Chicago “look like a f—ing Girl Scout f—ing cookout.” With the weight of the Democrat machine now transparently behind former Vice President Joe Biden (who was the...