I don't think you are wrong per se, I've seen first hand that dismissal or even censorship of FBI crime stats.

But even though the data is truthful and I wish we could discuss it, it's hard to deny that the goal of the poster is usually to legitimize hate and after a few heated discussions the mods learn to recognize it as a red flag and they act early.

I know, it sounds like a slippery slope fallacy. But we've seen how platforms turn out when it's allowed. Eg voat or gab.