OK, so the skinny, wool-capped kid on the left with the bullhorn. Well he was literally posing in front of uniformed officers and his friend (burka, tattoo) would take pictures. The kid was not saying anything through the horn. He would affect an angry face and pose and burka would take his picture. Immediately, they would convene to see the digital image; sometimes shooting another take.
How these patient law enforcement officers didn't beat the shit out of these poseurs, I don't know....
This, my friends, sums up the World Bank/International Monetary Fund protest 2007.