Good idea. Poor execution though.
Link, Newgrounds has had a history for controversy stretching way back into the late 1990s with the Teletubby flash game and so on. That shouldn't stop you from reviewing it properly- looking at the aspects of the game. Giving something a 1 because it's in poor taste is hardly fair on the people who spent time on it.
Giving something a 1 because it's a poorly made game on the other hand is alright. As long as you justify your reason.
Anyway, down to the actual review. I didn't like this. It was a good idea, taking the piss out of the riots but poorly executed. The pathfinding employed by both the police and rioters was not great- i was frequently able to trap the police (and conversely, my rioters) on corners. The pseudo 3D style of the game was good.
Overall- i don't think this was a great game. I agree with Amonkeyonfire- it should have been a true pisstake rather than 'serious and grim' as he put it.
It was a good idea but fell short of what it could have been.
I'm giving it 4, because it had decent graphics and was bug free. It needs work though.