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.
The radical party tore down a security wall
( z1 tear-down :ARG0 ( z2 party :ARG1-of ( z3 radical ) ) :ARG1 ( z4 wall :mod ( z5 security ) ) )