The best source is an editorial that illustrates some points but ultimately provides nothing of value to this conversation. It attempts to skirt around the point of female rights in Islamic countries and points to "fantasies of Westerners." I don't doubt the fantasies and brutality of westerners as they interacted with Islamic cultures throughout history.
But please, please, please do not tell me you are suggesting that the hijab is a sign of "women empowerment" in Iran. I can understand how the hijab may be skewed to represent empowerment in Western society - where a woman has a freedom to express her individual viewpoint. But when the law mandates that women remain covered, do not attempt to posit that it's somehow related to empowerment. This doesn't even begin to mention how women are treated in marriage / divorce in Iran.
This has nothing to do with colonialism. There are womens rights movements within Iran that detest this treatment which was re-instituted after the Islamic Revolution. This is, as the thread initially started out, a concern with feminism. If one is concerned about feminism throughout the world, they should shine their spotlight on the Middle East.