Instapundit Glenn Harlan Reynolds, from his weekly column for USA Today, explaining the Trump phenomenon:
There’s a lesson for our ruling class there: Calling Trump a fascist is a bit much (fascism, as Tom Wolfe once reported, is forever descending upon the United States, but somehow it always lands on Europe), but movements like fascism and communism get their start because the mechanisms of liberal democracy seem weak and ineffectual and dishonest. If you don’t want Trump — or, perhaps, some post-Trump figure who really is a fascist — to dominate things, you need to stop being weak and ineffectual and dishonest.Hence ... Trump.
Right now, after years of Obama hope-and-change, a majority of Americans (56%) think Islam is incompatible with American values. That’s true even for 43% of Democrats.
In that sort of environment, where people feel unsafe and where the powers-that-be seem to be, well, weak and ineffectual and dishonest, the appeal of someone who doesn’t seem weak and ineffectual grows stronger.