Ehhh... I'm not so sure that FEMEN is really a great group to support. It's pretty hard to find articles in English about this, most everything that I've been able to find on the subject is in Russian, Ukrainian, or Lithuanian, and I only have some level of comprehension in the last one, but I've heard that FEMEN has some serious problems with white supremacy and neo-Nazism. Most press in English about them has been supportive, or at least just focuses on the whole topless thing, but it seems like most Eastern Europeans are a lot less keen on them.
They might make some good points, but I'm wary of supporting any group that has ties to neo-Nazis until I can determine that they are not actually neo-Nazis.