Couple of random thoughts:
There are many feminist activists already fighting such issues in Islamic areas.
People are scared to denounce anything if they don't understand the cultural/religious context of it (right or wrongly).
Because it is debateable as to whether individuals have been brainwashed to some extent, or are wearing coverings out of free choice, again it makes it tricky to wade in and outright attack the veil or burqa or whatever.
I used to volunteer with some [secular] Middle Eastern women's rights activists who were very anti women covering themselves. Was refreshing.