It's real blood. A lot of them slit their foreheads because it's a good bloodletting spot and the blood runs down their faces and onto their chests. They also beat their backs with the self-flagellating device. Sick, huh?
It's to atone for the Shiite murder of some prophet related to Mohammad, I believe. I can check that when I talk to the Iraqis tomorrow.
Slit their foreheads!! Isn't that what they do in pro wrestling too?
Good point, what may look in the photos like serious wounds can just be tiny cuts. Cut your forehead even slightly and you'll bleed all over.