Oh good, we still have Fanaskin.
Here's the problem with the argument you're trying to make, and why I keep referring to it as irrelevant:
Not being a racist prick does not equal being politically correct. I never said being politically correct would help black people, you projected that. I said that making racist comments endorses and helps perpetuate racist attitudes. Regardless of whether "American Inventors gonna Kang" is uttered with non-racist intent, it is an extremely racist statement and casually tossing it around in discussions about race very much sends the message that it's totally OK, even expected, to make extremely racist statements. It normalizes and encourages racist attitudes, which happen to have a negative effect on a lot of people, even today. Instead of asking me to prove something I didn't say, why don't you tell me where I'm wrong in this paragraph?