many people around, I discover, are confused about when to block people or how to know if they are actually trolls. well here is my opinion:

don't block if they aren't repetitive. chances are if they don't continue trolling and someone tells them they would stop. but if it persists and the case is hopeless, then blocking is probably best.

for lewd, racist, or seriously rude direct attacks, there is no toleration of that, so there is an instant block for you.

if, for minor annoyances, like the case of people trying to press their opinions, feeding the trolls, and being impatient with you in chats, I don't think it's worth blocking.

but how do you block