You can't be a liberal and a Muslim. There is no liberal tradition in Islam. You can be a pro-choice, pro-gay, pro-feminism Episcopalian or Buddhist or Reform Jew. If you hold those views and also consider yourself a Muslim, then you're being unfaithful to one or the other. I think there's plenty of ideological room for a liberal sect of Islam; but we're still waiting for someone to create it.
I personally know a number of liberal Muslims. But I'll let them know that according to a guy on the internet they have to choose one or the other now.