I don't really go here, lol but the thread was linked somewhere else. I think it might be more useful to point the Terms of Service that users agree to when joining the site (rather than nebulous terms like hate speech) which specifically states :
will not post or submit Contributions that: (i) are defamatory, damaging, disruptive, unlawful, inappropriate, offensive, inaccurate, pornographic, vulgar, indecent, profane, hateful, racially or ethnically offensive, obscene, lewd, lascivious, filthy, threatening, excessively violent, harassing, or otherwise objectionable; (ii) incite, encourage or threaten immediate physical harm against another, including but not limited to, Contributions that promote racism, bigotry, sexism, religious intolerance or harm against any group or individual; or (iii) contain material that solicits personal information from anyone under 13 or exploits anyone in a sexual or violent manner;
I also think call out posts like this, if people are going to insist on making them, would do better with linked comments as examples, I'm not entirely sure I see the point of such posts anyway because most of us who don't want to see such comments are probably already blocking such accounts without prompting.