There is one person who, three times that I have seen, has posted about how black people are genetically inferior and predisposed toward being stupid criminals, as anyone who has actually spent time with them could tell. Each time it has been removed, and rightly so. But the result of it simply disappearing is that any trace of his racism has been scrubbed clean from his account, there is nothing to show it is a recurring problem, and it’s hard to tell if anyone noticed and so how long he can keep doing it.