Good post.  Part of the change begins with Reagan and courting the religious right vote.  At the time of Reagan the right had public intellectuals who were actually well educated - like William Buckley.  After Reagan there was a courting of the stupids.  Sorry, we're out of the era of political correctness now so that's the preferred term, I believe.

During the time of Reagan WH you could never get away with saying the the Palestinians refused to recognize Israel's right to exist.  It's a senseless ahistorical phrase - recognizing Israel's right to exist dates back to the time of Arafat and the PLO - else Reagan WH would probably not have been so helpful to Arafat (relatively speaking).

Today even Hamas recognizes Israel's right to exist and Israel's response has been to move the goalposts and demand to be recognized as the Jewish State.

Not Trump or any of the wee violent trumpeters care to know the least of what they are angry about.