Does anyone think this person isn't lying? Like, to an empathetic person who genuinely opposes racism, it should be obvious that if you're talking about something that could be harassment, and it's being done to a Black person, then it's extremely reasonable to conclude that racism is at play.
So, to volunteer to reply to a Black person who's pointing out racist harassment to tell them that, in your opinion, it's harassment that's not "specifically anti-black" would be essentially to tell that Black person that there's nothing specific about them to you. Which is racist.
This doesn't seem complicated to me. Anyway, #BlockList and #Fediblock candidate