What is the point in defining (redefining, actually) 'racist' to mean a lesser flaw of acting on bias/prejudice, which every human being does? If I refer to someone as 'tall', I mean they are in the top 10-20% of height, not that they are tall because they are not the absolute shortest person on the planet. Defining tall in a way that applies equally to everyone is pointless-- why even have a word like that? If the word racist is going to retain a useful meaning, surely it must only apply to those who are more extreme in their bias/prejudice.

As for the guys walking down the middle of the street... it's wrong to think a minority group can do no right, but also that they can do no wrong. Why make excuses for bad behavior? Jackasses and morons come in all colors. The white driver who honks the horn is not trying to 'reassert privilege', just trying to get to work on time.