People like this mayor are pushing the limits of what constitutes inciting a riot. Trump is no more responsible for this violence than I would be for supporting my football team in front of a fan of a rival. If the rival's fan becomes violent, that's not my fault, and Trump saying build a wall, while they may consider it provocative, is not inciting anything. For one to be guilty of incitement, it must be one's own people who become violent, and we Trump people, one or two guys notwithstanding, are as peaceful as it gets. This guy's statements, however, are giving the Trump protesters what they consider to be cover, and will only encourage them to get more violent, all while saying Trump's rhetoric justifies it. It does not, and they are responsible for their own actions.

It's all really being done to continue the narrative that Trump is hateful, though, so that when Trump's supporters inevitably defend themselves, the media can spin it as we were the aggressors. Objectively, this "fighting words" argument is terribly flawed, but logic is not the average Bernout's, or illegal alien's, strong suit.