The thing about the video: the participants should have known it was a joke. But on the other hand, is there anything in there that Trump absolutely couldn't have said himself? It's hard to say that because he's said so many ridiculous things. Was there anything in the spoof videos actually worse than joking about political assassination? You don't get much more stupid than that. And that was actual Trump, not spoof Trump.
The conclusion has got to be that Trump himself is actually a spoof, it's just that about a third of the country doesn't realise it. The idea that his whole campaign has been a deliberate attempt to help Hillary doesn't seem so far fetched.
The bald guy at the back was interesting. He seemed to think it was all a joke, but he supported it anyway. Which kind of sums up the attitude of Trump supporters.