> Same with racism: he wasn't in any way called "racist" by anybody until he ran for president,

Trump was first sued by the government for racial discrimination something like 40 years ago; he's been being called a racist for a long time before he ran for President.

Of course, a lot more people paid attention to him and talked about him at all, and a lot more people paid attention to what was said about him, once he became a Presidential candidate.