Every response to the first responses asking the 'why do we need this' is a bunch of dismissive replies and facepalm gifs. Education is the way to tolerance, which he/she stated that they were naive about the problem. Just simply tell him/her, don't belittle them.
Except it's not our job to spoon-feed information that can be located with minimal effort. Google exists for a reason. "Why does representation matter?" Four words. Now if they had did some research and didn't understand, that would be another issue, one with which I would gladly assist and discuss. But this "too lazy to try for myself let me just ask someone" entitled attitude gets no quarter from me. And that's before we get to the dismissiveness of "Why does this matter?" and the ever ironic inherent racism in statements of cultural denial like "I don't see race"*. Furthermore, not seeing how race matters is simply willful ignorance of the world's culture. Or are we pretending that racial atrocities aren't a damn near daily occurrence?
*I'm aware that specific phrasing wasn't used, but it's clear from my perspective that this was the point being posited in these particular postings.