They are “so-called” anti-riot police. Photos here
http://en.wikipedia.org/wiki/200910_Iranian_election_protests
photos on right, 4th row from the top- click to enlarge (but it isn’t captioned)
and here
http://cryptome.org/info/iran-police3/iran-police3.htm
more than halfway down the page; the ones with the “cowled” helmets
Thanks..that’s what I thought when putting them up.