Did I take the bait -- or did you?
But hey, jokes are important, Bubbles! Society is
way too uptight about race -- it clearly
needs more jokes about racism, since humor is a great way to illustrate the truth and tear down barriers. And your "joke" is a perfect example as to why we need more humor about this topic.
Shall I explain?...As the premise of your joke the stereotypes of aggressor vs. the oppressed, was refreshingly reversed -- as you put it. But in
reality society already agrees with those sentiments. Black-on-white racism is currently
far more tolerated than is its white-on-black variety. Therefore not ironic. And if one knows this, then your "joke" was a actually an attempt to acquiesce the stated stereotypical aggressor. Not ironic, not daring and not a clever remark on societies foibles -- all of which are the hallmark of good humor. Rather, it was an attempt at levity, where levity holds no value and will not stick.
For example -- if one of Hitler's buddies had joked with his friends, from high atop the guard tower... "I find this whole 'Final Solution' business to be a refreshing change of pace." There's no humor there since it is fully in line with the aggressor -- not ironic, not daring, nor clever. To be humorous, it would need to be reversed... and a prisoner getting off the train would have to say something like "You know what Herschel? I think this camp is going to be a nice change of pace for us."