Yes, obviously. Any white person who voted for Trump is a racist. And yes, being willing to tolerate his racism makes you a racist.
Not necessarily, when you consider that most politicians are criminals and that every President in our history has been to greater or lesser degrees a racist.
Clinton locked up Black men by the millions in the 1990s. George W. Bush continued those policies.
FDR locked up Japanese people on the basis of them being Japanese and little else.
Lyndon Johnson, for as much good as he did with Civil Rights, helped shape the War on Drugs. Nixon and Reagan gave it a name and zeroed that War on Blacks, Latinos, and Hippies to suit their political agendas.
Eisenhower pushed Mexican immigrants out of the country.
Jimmy Carter said that neighborhoods should retain their ethnic purity, a very Hitlerian statement.
Reagan evoked States Rights as a code word for "We're better off without Blacks."
Obama injected himself into local racial matters, turning them into national debates, and helped stoke the racial tensions of this country.
They are all relatively bad people, and all have racial wrongs under their belts. It comes down to the choice of who will hurt me least.