Knowing is a very fuzzy bar here. There are/were people who turned to 4chan's /b/ (or other boards) for a very twisted way of guidance. ("Should I kill myself?", "shoot up the school", do "an hero" etc.)
Of course in these cases the Internet Hate Machine's response is the same, but the intensity and effectiveness varies.
Is any single commenter legally responsible? Probably not. And not because they lacked intent, but because 99.9% of these threads are empty trolling. So they could be almost sure knowing nothing would happen.
However, if someone does this for years in the hopes to participate in a thread that is not a dud, well that's of course a different state of mind, but it'd be hard to prove.
Of course in these cases the Internet Hate Machine's response is the same, but the intensity and effectiveness varies.
Is any single commenter legally responsible? Probably not. And not because they lacked intent, but because 99.9% of these threads are empty trolling. So they could be almost sure knowing nothing would happen.
However, if someone does this for years in the hopes to participate in a thread that is not a dud, well that's of course a different state of mind, but it'd be hard to prove.