[bawolff]

I don't really find that compelling.

Some level of discomfort is ok. Some is not. There is a line somewhere. Usually it involves the level of violence involved (terrorists after all are just making people very "uncomfortable" [what's more uncomfortable than being blown up] to achieve a political end.).

To make the ad absurdum argument explicit: if your argument for why this protest is ok applies to 9/11 to the same extent that it applies to this protest, maybe its a bad argument. That doesn't mean that this protest is neccesarily not ok, just that this is a really bad argument to use to prove the point.