A lot of different groups of women were active in demonstrations. It was suggested that some came on to the streets through the inducements of bags of rice or tins of oil. To begin with, many women on demonstrations were bare-headed but as the movement took on a more Islamic tone, women were required to cover our heads on demonstrations. At some demonstrations, men formed a ring of protection around the women protestors.
Demonstration at Tehran University

These demonstrations also made for great photo opportunities. It was fun chasing other photographers trying to get good pictures.

Other photographer, check. Woman with gun, check. Baby, check.