"To suggest it was a conspiracy it a bit ridiculous, IMO."
I can see the logic for those who say that it is a conspiracy.
The Government needs to paint the students in as bad a light as possible to take away what public support they have.
The Police have tried various approaches and been criticised for each of them, they could do with a justification for cracking down tougher next time.
Meanwhile they were in about the safest vehicle they could be and also surrounded by armed police should things turn really nasty.
So it does make a kind of sense.
But choosing between the people being involved being so incompetent as to send them down there or so conspiratorially organised so as to pull it off I'd vote for incompetence every time :)