And a weird sop to the racial-grievance industry CLEVELAND—Ted Cruz did the Republican Party no favors last night when he pointedly refused to endorse GOP presidential nominee Donald Trump, breaking a promise he and other rival candidates made at the outset of the primary campaign last year. Cruz also made what appeared to be some kind of overture to race baiters by mentioning aspiring cop-killer Alton Sterling who was recently shot dead by Baton Rouge police during an altercation. It seemed very odd, but maybe in retrospect it shouldn’t. After all, Cruz went along with leftists and a few other...