I was in college when this happened, and a few months later my philosophy professor, who was hard core into this being a conspiracy, went a bit off his rocker and was giving speeches and showing videos about how 911 was a hoax.
He also bought a bunch of books and handed them out to people. I attended a few because I wanted to see what all this was about. He spend almost all of his time preparing for a bit show he was doing in March in the schools auditorium... handing out fliers, having free food, promising answers, etc.
Low and behold, after the school told him it was ok, they denied the request and locked him out that day. He had authors from two books he was talking about showing up to speak, but no talk time for them.
Turns out that in order to do something like this, you need clear written statements of the event and who the guest speakers are from the dean. Word is he just reserved the space with no details.
Conspiracy
??? People then talked that the gov't was blocking the truth and even deans and professors at the schools where threatened to close this down
Not saying I believe one thing or the other (regarding the 9/11 attacks) but funny how things get blown out of portion