Interesting.

Yahoo! News - Police Turn Up Volume for GOP Convention

At the Brooklyn training site on Thursday, police practiced disarming a truck bomb at a checkpoint. Scores of officers also made mock arrests of police academy cadets who posed as protesters.

Chanting "no justice, no peace," the cadets surrounded a bus full of "delegates" before officers in riot gear raced in, slapped on plastic "flex cuffs" and led them away to vans.

The unanswered question is, did the cadets enjoy their chance to play protester? I know from my experiences on Feb 15 2002 that many NYPD personnel are sympathetic with the cause, and I'm certain that many are angry with Bush. It will be interesting to see how it all goes down.