>Where would you draw the line?
no line. representatives have chosen not to represent their constituents, at a certain point it needs to be clear that if you can't keep your promises, ignore the needs and concerns of the public while holding them in contempt, this is the only possible outcome. censorship cannot solve this problem, only effective governance can.
It was probably advisable to censor his tweets if Twitter didn't want their more easily angered users to turn against them, but they were by no means compelled to do anything.
I understand that you intend that to read as "do you think people should be allowed to yell 'fire!' in a crowded room in which there is no fire", but for every false positive punished you create a chance for a false negative to arise from people to afraid to speak up for fear of getting it wrong.