I think I either got through to someone or found a cheat code for life. I’ll skip the background and setup.

Her: All men are trash.

Me: Wow, you hate black men?

H: No, it’s mostly white men controlling...

M: But that’s not what you’re saying. You think all men are trash, so why do you hate black men? Seems a hard stance to hold these days as a white woman. What do you think they could be doing better? Isn’t that pretty insensitive?

I’ll skip the rest but helping narrow their hate to a subset of men they feel sympathy for at the moment and contrasting their hate against racism directly confronts their discrimination. Simply let them talk and force them to defend an inexcusable argument.