What I see is the version of racism that exists is not really racism, it's the leftists believing they are superior to all of us.
What you and I may call "rude or impolite" could be what they call racism if it happens to you.
I'm glad you haven't experienced it. I have seen it growing up among KKK and living on the border.
What it looks like is privileged people making decisions about rights for less privileged.
That's why I say it's supremacy and not "racism".