Actually liberal feminist groups were trying to drum up support for women's rights in Afghanistan since well before 9/11, Human Rights Watch & Amnesty International report regularly on human rights violations in the Muslim world, etc.
Now you won't see as many American liberals bitching on message boards about Islam-driven politics as you'll see them bitching about Christianity-driven politics. But that's cause in the US Christianity is easily the dominant religion and swings a big stick in politics, while Muslims are part of a half-accepted minority.
So while we have influential organized Christian political groups in the US trying to enforce their particular morals in gay marriage, abortion, stem cell research, foreign policy, anti-sharia panic, public school curriculums, birth control access, then showing up on message boards to whine and moan about being called bigots, what influence do Muslims have? They can barely build their version of a YMCA without dealing with a PR shitstorm.