40% of the country doesn’t wear MAGA hats, and didn’t at the peak of that cult, either.
And even if they did, popularity doesn't make you different from the Nazis or the KKK, both of which had fairly high peaks of popularity in their respective geography.
The prior four years were an exercise in the extreme amplification of divisiveness by all sides. I wouldn't blame anyone—on either side—for being momentarily swept up in it.
(To be clear, I'm not claiming equivalence and don't dispute that most of the blame rests with Trump's divisiveness.)