Because trying to segregate such things into 16 categories is insane. One cannot be BORN racist, you must be made racist. If you wanted to be really vague I’m sure you could cut it down to a few types that prone irrationalizing things of this nature, but even then I would highly doubt it’s accuracy. We can only speculate, and of what use is that?

Is it not decided that we cannot change our type? So should it not make sense that things related to type cannot be as subjective and small as racism?

Is this common sense? Hmm, I think it might be. But what other answer is there?