British teachers are fed up with the cruelty that thugs stationed in schools display towards students, and voted to call for the thugs' removal.

In my view, the race of the students who are treated cruelly is an insignificant detail, because it would be wrong regardless of who is the victim. But it doesn't surprise me that bigotry and cruelty tend to go together. That pattern is widespread: bigotry brings out a person's tendency towards cruelty.