Some people want to be racist, and for those who don't want to be, that fact may be difficult to understand. In their minds, it's just up to others to enlighten the racist. Perversely enough, it's frequently the targets of their isms that are expected to provide this enlightenment.
But, the happy (rac)ists need their hate and ignorance. It justifies them and gives them a worldview that makes them comfortable. It's a cozy blanket of tribalism via a shared mutual hate and, ironically, a posture of supreme victimhood. It's "I hate you because your existence is somehow harming me."
They cannot be educated because they don't want to be educated, and they are blisfully and willingly unaware that their current views are malformed.
The happy (rac)ists are a time, energy, and emotion sink--a lost cause.