A quick answer to
MJS's questions above. Student politics always tended to be a much more visceral and emotive affair than 'adult' politics when I was at University and, as such, it was not uncommon for disruptive elements to try and make a mockery of proceedings.
So, if the Conservatives were having a meeting then the Labour chaps would cause as much trouble as they could in mature ways such as heckling, asking interminable or personal questions, shouting, throwing (flimsy plastic) empty glasses et al. Same went the other way round.
Things got nastier around the time of the Miner's strikes and local thugs started to get in to the Students Union building during political meetings (we had no such thing as security back then, after all it was only the IRA and the European terrorists trying to blow us all to hell
). To cope with this, the rugby team, suitably rewarded with beer (it's one of the best currencies when dealing with them) would provide perfectly adequate muscle. Four on one, legs and arms, up off the ground and out. They could wriggle, scream and fight all they liked, the result was always the same.
Having seen this with my own eyes, that's one of the reasons why, even with comments here from someone with 'security services' experience, I don't see what was so difficult about just hoiking him out the door. He's a not-quite-mature (in more ways than one) student, not a hardened prison-veteran, gang-banger or highly trained secret-terrorist.
As to how I would've handled the situation, that's an interesting one as I don't know the procedures the University has for such matters. Lacking that, I'd go with what seems to be the straightforward approach. Warn him about the consequences of not following the appropriate etiquette for the 'floor', maybe more than once.
Point out the big chaps waiting in the wings and tell him he'll be escorted out if he persists in not following the 'rules'. When it comes time for eviction, then out he goes. No mauling him around and goading him into more physical resistance, so the big chaps can sit on him and tazer him. Just pick him up and throw him out (checking him for weapons if you're paranoid).
Would it work? Don't know; but I've seen it work before with people a lot more aggressive and violent than the video stooge. Consequences? Well, I'm from a different country where we haven't quite learned to scream 'Lawyer' as soon as we get a bad outcome for our misbehaviour, so I can't say. In America, probably some sort of law suit for 'assault' but given that we had a Senator in the building I wouldn't put money on it.
The background point as to why the video was so 'bad' in my eyes was that it was one of the direct arms of the governments authority (i.e. the police) doing the suppressing. I wouldn't have been half so bothered if it'd been university security guards, even with the tazer'ing (tho' that is still not good).
One is the suppression of political opinion by the government, the other is a private institution ousting a troublesome 'guest'. Maybe it's just me but there's a world of difference between the two - one being ominous for your future freedom of expression, the other having no further implications beyond the need to behave civily at public functions.
Anyhow, over-burbling as usual.
Some very good points have come out in the past few posts and I'm happy to see no more of the disturbing elation at seeing someone roughed up and zapped.
I'll try and get to watch the other 'streams' that are coming out as it'll be easier to draw proper conclusions with fuller coverage.