Because terrorist groups will be present.
OWS Tactics Turn Violent with Attempted Cleveland Bridge Bombing - Yahoo! News
This logic is embarrassing.
Again I will point out that individual guilt somehow escapes you.
You are trying to make thousands of OWS attendees guilty by association. Blaming everyone for the actions of a couple individuals. Alleged actions, by people who allegedly attended an OWS event.
By your logic, how can the FBI be trusted at the event? Aren't they all guilty?
Remembering the Waco Massacre
By your logic, how can the TSA be trusted at the event? Aren't they all guilty?
TSA Agent Caught With 50k in Goods
By your logic, how can CPD be trusted at the event? Aren't they all guilty?
Autopsy Shows Police Brutality Caused North Chicago Man's Death
Good people protest NATO too, yanno. People are coming out to protest globalism and the erosion of national sovereignty. And they will be shut down by checkpoints, sound cannons, and riot police. Welcome to the new Amerika. Rahm Emmannuel thanks you for supporting his agenda.