Trump could sacrifice children on the altar of Baal built into the lobby of Trump Towers, and the Trumpsters would claim it's just tactical and the real Donald will emerge once he's done with Cruz, and Kasich, and Hillary ... and it will never end.
He may have been joking, but he was right about shooting someone of Fifth Avenue and his supporters wouldn't care.
That should give the RNC and Cruz pause if they try to steal the nomination from the front runner who has the most delegates, votes received, and states won--by far. Without the support of the Trump voters, the GOP is doomed for a smashing defeat at all levels. Trump voters will not stand for the theft of the nomination and will react accordingly in November.