When participating in online discussions, do you not get a sense of what opinions are OK to express even before the conversation gets going? The current zeitgei

When participating in online discussions, do you not get a sense of what opinions are OK to express even before the conversation gets going? The current zeitgeist in many public forums is very “fuck Muslims at all costs”, and even if those comments do eventually get downvoted, people still feel safe to post them over and over again. In some forums, they even float to the top with frightening regularity; see /r/news et al. In other words, I already knew what I would be seeing as soon as I stepped into this thread. Even 1% of a population speaking out in favor of genocide is a fucking travesty.