Why are Trump's supporters so passionate, around his person?

Of course I'm not saying that's the case with all Trump supporters. But I have noticed that some really have a kind of ideolization of Trump. I mean, no matter what Trump says to them, it's automatically great, because Trump says it.

And then Trump is absolutely great because he's fighting against the "elite" against the "system" bla-bla-bla...

There are certainly good arguments to say that Trump hasn't been a bad president, but I personally find this idealization of a man rather strange.
Why are Trumps supporters so passionate, around his person?
Why are Trump's supporters so passionate, around his person?
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