|For years, unveiling had been a central issue for women's groups. Women used various means to show their discontent with the black veil (Chador). In Shiraz, for example, women had changed the colour of the Chador from black to dark brown, an innovatin which ended when they were attacked by a mob in the streets. In the late 1920s, a number of leading women activists stopped wearing the veil in public... Reza Shah's anti-veil offensive came in 1936. The veil was abolished, and police were instructed to use force to remove women's veils in the streets.
Haideh Moghissi. Populism and Feminism in Iran. St. Martin's Press, 1994. P 39.