You're not a government, and preventing people from attending the speech isn't censorship- it would be preventing the speech in the first place. Though I'm rather certain that pulling a fire alarm or forcibly preventing someone from going somewhere that they wish to go violates some other law- assault in the latter case, maybe vandalism in the first?
Fundamentally, non-government entities can still censor. Censorship is not limited to government action.
As an example, if Google, Facebook and every other major tech company joined up to stamp out a viewpoint, they likely could do. Quite a few of them are doing something similar already. Would this be censorship? I would argue very much it was. Censorship by private entities, but still censorship nonetheless.
As for your earlier bit about the XKCD comic, it's just pointing out rather plainly that if you have the right to express your opinion, others have the right to tell you to shut up. Mind you, you can just keep talking; you're under no obligations here. If they ban you from a forum, I'm rather certain that you made no contract with the owner of the forum under any form of "right to post" so it doesn't matter why they banned you- they are under no obligation to care. You're under no restriction to not make another account. So on and so forth.
Of course they can. That is their right to tell me to shut up. The reality of it is that they are showing that they have no refutation of my arguments in telling me to shut up.
And the stuff about universities? Eh, each one's different. Also they're not government institutions and students sign contracts where they can remove the student whenever they damn well please.
They are different, but the
vast majority of universities (at least within the UK) are now pro-censorship.
They do, but holding someone's life on the line by threatening to ruin it if they express the
wrong viewpoint is, again, censorship.
So to recap, there is a completely subjective standard and anyone who violates that standard has broken a principle you claim to be universal.
Is your viewpoint relevant to the debate in any way? No? Then it's not a matter of exclusion, it's a matter of bounds.
Ultimately, freedom of speech isn't a fundamental right. You have
no fundamental rights. Freedom of speech is our way of being polite, however, and accepting that debate with opposing viewpoints makes a healthy society which can grow, change and evolve.
It is censorship if you derail a thread by shitposting so it gets locked.
I think I'll be going :x
The scary thing is, Loud, your shitposting usually contributes meaningfully and doesn't seem to get threads locked.