Not really on the race issue. The difference is that "black" is an accepted, common term for people with noticeable sub-Saharan African ancestry (or who identif

Not really on the race issue. The difference is that "black" is an accepted, common term for people with noticeable sub-Saharan African ancestry (or who identify as such). So using the same term to essentially mean "bad" is problematic. "Red" is no longer common at all for referring to Native Americans (even less so as of this week thanks to getting rid of the name Redskins), and I think you'd be hard pressed to find someone who identifies as a "red person." Also, red in this usage would entail more of a stretch to consider that it means "bad." It just means "stop," which is far more neutral.