Donald Trump has given a substantive speech about urban violence and anti-police attitudes in West Bend, WI. You can read the transcript at The Conservative Treehouse website.
His main points: the main victims of urban crime are inner city residents of color; the police are the answer, not the problem; the Giuliani model of policing saves lives and protects the law-abiding; and the policies of Democrats, who run most such cities, make all of this worse.
Once again, I see little with which I disagree, although I suspect his asking for black votes is largely futile.