When I was at the protests on Monday, I was humored by the three lines of participants; like a layered cake they spanned the street:
The 3 P's:
The Press filled the space between the riot police and the protesters. They spent most of the time watching the police. In this shot the press are running to catch up with the deviating anarchist group.
I also noted that all of the 3 P's had camera and video equipment. All three layers were documenting the happenings, all for varying reasons, I think.