Premise: Surely the member would admit that we should not prejudge the inquiry and that there were some students or even non-students who were members of groups such as the International Socialist Workers Party and other radical organizations who were clearly there to disrupt the summit, posing a security threat and tearing down a security wall separating them from heads of states.
Hypothesis: Some members of the International Socialist Workers Party had organised a rally to unite the head of states that attended a summit.