YouTube Added: 26.10.2011
Footage from the Occupy Oakland protest, October 25th, 2011. After protesters ran to the aid of a badly-injured person, Oakland Police deliberately lobbed a flash grenade into the crowd. Whatever you think of the Occupy movement, police behavior of this kind is criminal and should be prosecuted.
The original footage is here: http://www.ktvu.com/video/29587714/index.html