Historically, we see these kinds of narratives appear wherever a dominant group starts to fear the loss of its dominance, especially if the perceived threat comes from whichever group(s) they’ve been treating most like crap. In this context, reversals usually stand as none-too-subtle messages of warning from dominant-group members to other members of their own group: do everything you can to keep oppressing these people, or we’ll be the ones getting screwed next.
—  N. K. Jemisin, nailing it.