Here's a video showing marchers in Manama, Bahrain, yesterday, heading to Pearl (Lu'lu') Square. Anticipating a confrontation with security forces, they put on their gas masks. And some, including Nabil Rajab, a prominent human rights activist, put a kufiya over the gas mask.
Nabil dons his gas mask
and then the kufiya
(If you watch the vid you'll notice that others do the same.)
The new face gear for the Arab revolts: kufiya over gas mask.
(I got this from the New York Times, from a piece by Robert Mackey on the Times blog, The Lede.)