I think Trump is getting a wee bit over-confident because we now see him gradually taking more liberal positions.
He’s throwing them out there to test reaction and then pulling back if the reaction is too negative.
An example is his remarks on the NC bathroom bill. At first, he was critical and dismissive of the bill, but the next day, he moved smoothly back into declaring it a mistake but a states rights issue.
I don’t know how far left Trump will have to move before the realization sets in on the trumpers.
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.