Ok I might have found one of the least-appropriate WWE segments in history that is never talked about.
At Wrestlemania 21, Eugene comes out and starts talking about "midgets" (his word, not mine) at Wrestlemania 3. He's interrupted by Muhammad Hassan and Daviari. They start attacking Eugene, until Hogan comes out and starts beating them up.
So we have 3 characters who aged poorly to begin with. Lawler says people hating Hassan isn't racist because there are plenty of reasons to hate them. And then notorious racist Hulk Hogan comes in to beat them up.
Of all the offensive WWE moments in history, I'm surprised this one never gets brought up because it's all sorts of terrible. The first ever Money in the Bank match that preceded it, however, was incredible. I thought I stopped watching after Summerslam 2004 because I didn't remember a single thing about Survivor Series, but two matches in and this show is very familiar to me.