Does The Catalan Independence Movement Have An Armed Wing?

An obvious question that I have not seen addressed much less answered. The declaration of independence by the regional parliament will undoubtedly bring a robust response from Madrid. Spain will attempt to put down the independence movement and, as the police behaviour during the referendum demonstrated, will likely not hesitate to use violence. Are the Catalans ready or prepared for that? Or will the Catalans move persuade Madrid to seek a negotiated settlement? And if not………?