Brexit is neither fascist nor (intrinsically) racist. Boris certainly has some racist ministers working for him, and I don't doubt that he's casually racist; but then most people are, to some extent.
I worked in the US for a year. I'll never go back. I saw too many black kids lying on their faces by the side of the highway, with cops standing over them pointing pistols at them. I never saw a carload of white kids getting that treatment. This was a daily experience (and I was only on the highway for about 10 minutes daily). It's completely normal. I was regularly told that when I leave my home, I shouldn't walk past Nth St., because that's a "bad neighbourhood" (i.e. black).
My experience of living in US was restricted to Richmond, VA. I've been to other parts, but not lived in them.
Sure, UK cops are racist too. But somehow the US cops seem to get a free pass - it's almost as if they're hired to be racists and bullies.