Can't find the report either, there is this though. On 10/29 a cop was attacked, when he arrested the attacker more protestors began causing problems.
10.29.11 Occupy Denver: Confrontations Between Protesters and Police, Video Reports | Alternative News Report
Those damn peaceful protestors.
your link shows people being hit by police....lol
Of course those evil police were just molesting those peaceful law abiding protestors right?