Some things are facts. There is a massive problem with racism in the UK, and my understanding is that it’s even worse in America.
People can say the queen is a lizard or trans women are the same as biological women. Doesn’t make it fact. Just like denying racism, or saying there’s no evidence George Flloyd was murdered by a cop, doesn’t make that fact either.
The word "fact" is funny. Clearly some things are simply true or false, like the moon being made of cheese - false.
Even with things like that, however, people can be mistaken, even all people, about what is in fact, a fact.
More complex questions like the state of racism in the US is not the sort of thing that would usually be put in the fact/non-fact category. It's too complex a question, there is too much room in terms of how it's interpreted. If you are thinking this is a question with the same kind of objectivity as what the moon is made of, you're likely to make category type errors.
Shocking as it seems to people who only watch their news on one side of the aisle, there are quite a few educated, intelligent black conservatives, who make serious arguments about the state of racism in the US that do not agree with your assessment. Their arguments deserve to be taken as seriously as those of anyone on the left.