Yippee! It is a green cap, after all! (Another follow-up)
Combustible Boy informs me that “Some commenters in that Michael Totten thread said this guy with his ersatz Mao cap is a regular presence at San Francisco rallies. Here's a pic of him that was snapped at a rally on April 10:”
“Same hat, same sunglasses, same clips on the sign.” Adds Combustible boy, “Somebody in S.F. needs to figure out who he is and what he's all about.”
Ersatz. That’s a nice word.