Word as censor

Literature has always found escape routes from the power polemics by giving new multiple meanings to words. Over the ages the dominant power structure s of the day have attempted to control language by placing restriction of w ords - by blotting them out, reducing the shades of meaning they could have or divorcing a word from meaning. Can literature, along with the other vis ual and plastic arts, find escape routes through the subtle forms of censor ship practised today?