I think you are right, a lot of people are afraid to tell you they voted for Trump, not good, polls become useless. In my 62 years I would never believe this could happen, the hate is crazy, I think a lot has to do with Antifa and the many dummies we have here and around the world, the world, life in a Capitalistic open society is very complicated. For me the fact that this stupid cop lost his job, going to jail, his wife and everything else should be enough, it makes me sick what he did and the other cops should have jumped in, this is fact even without the many who are calling for more vid on what he did to get on the ground and abused and murdered. I have stated that I will not vote Republican again but after this I don't know.Who really knows who this will help or harm. I know from seeing how DC (the city itself, not the political abstraction) was destroyed and rebuilt decades after rioting, that many terrible things and many surprising things come from the ashes of riots.
As far as Trump goes, it’s not even yet clear from polling data or short-term effects whether the pandemic has harmed his administration. You would think we would know after a few months but we really can’t tell. A lot of the effects of these crises will likely only be apparent in retrospect.