There is no such thing as "accidental" racism. On an individual level, a White person may unintentionally say or do something racist, because they are cloaked in the ignorance of unexamined privilege. But that doesn't make it accidental. That is the result of an entire culture carefully built around structural racism that privileges Whiteness and viciously defends White people's ability to coast through life never having to become familiar with any perspectives or lived experiences but their own. That is no goddamn accident.
It is also the result of individual White people choosing to lazily bask in the luxury of their racial privilege, despite the fact there are all kinds of opportunities to question the white supremacist narratives with which we are all socialized. The luxury to know those narratives are bullshit is not one that it shared by people of color, and it is a choice to start the lifelong journey toward understanding (and not trading on) one's White privilege, or to sit in the comfortable easy chair of unexamined privilege. That, too, is no goddamn accident. It is a choice.
whoooooops, I'm a racist