>>/3/
I think Fredrick Brennan is roughly correct, and 8chan shot itself in the foot by not publicly reacting to the shootings at all.
/pol/ is a global board owned by the admins, it wouldn't have violated global policy to shut down the board for a few days whenever this happened. Even just not allowing people to celebrate these shootings wouldn't have been such a great loss.
I don't want large tech companies to be arbiters of free speech, but when they're legally allowed to be they're eventually going to reach a breaking point if you look heinous enough. They're not immune to incentives.
I never liked /pol/ in the first place, though.