Prejudice is prejudging without evidence. 407 years of white racist behavior has created a mistrust of white people by many non-whites. I'm talking about a lived experience with over 10,000 examples where I have run into white racism an that a conservative estimate of racism that was obvious. So after facing that many racist encounters with whites, we are just supposed to assume no one white is racist, and if we do so, we are said to be prejudiced.
Of course, I expect that you will again try creating an equivalence where you have encountered what you perceive as black racism. You guys just can't conceive of anything whereby your behavior could be a cause for any reaction from those on the other end.