Even in societies with a state, anarchist groups provide a voice for the oppressed.  Even if the state is never overthrown anarchism will always have something important to say. Anarchist groups were at the forefront of resistance groups in world war two, and today they are at the forefront of protests against the state whenever it tries to take even more from the worst off in society, for example in anti cuts protests in the UK. [1]  Anarchist communities like Freetown Christiana in Copenhagen exist as centres of peace and culture, by standing outside of society it provides a useful commentary on society as well as being an example for how people can live more freely without a state.  [1]