Do you really need courts to settle a verbal (well.. written) argument online?
Yes, it's just one of many examples where cultural differences cause issues, and where two people consider themselves "good" and the other one "bad" and in turn, censor all speech, since both are racist in atleast some of the courts.
You imply (but I am not convinced) that there are serious consequences for having one opinion or the other on these "cross country" online communities. I suspect instead that for the more nuanced issues like affirmative action there will just be the usual arguing back and forth and little else.
Of course you can. Especially if there's a fire.
[0] https://en.wikipedia.org/wiki/Shouting_fire_in_a_crowded_the...
Do you not realize that "echo chamber" describes this place, and any place with groupthink enforcement mechanisms (voting, karma, flagging, and excessive moderation) much more accurately than 4chan? For example, HN groupthink has endorsed low-carb and ketogenic diets almost since its inception, and as a consequence, has also promoted the dissemination of dangerous health misinformation, like LDL cholesterol denialism and downplaying the risks of excessive sodium and satrated fat consumption.
But doesn't it?
Usually it's the authoritarians, dictators and generally "bad guys" who need to limit speech, censor, burn books, etc.