As I learned recently, you can click the time stamp of their comment and flag it for moderator review on the resulting page. That's the path to reporting hateful or unacceptable speech.

what? what's hateful? How's giving animals the status of humans hateful? I gave a no analogy there. I mentioned a possibility. Also, I am pretty sure 100 years back someone mentioning that gay marriage should be legal was categorized as hateful.