Ideas for a philosophy Thesis

Hi all, I'm in my final year of a philosophy degree and I have to come up with a thesis proposal in the next ten days. I've kind of blagged my way through the degree thus far, and I'm a bit left in the dark when it comes to choosing a thesis. It has to be fairly specific, I mean I wouldn't be able to do one on say 'The Existence of God.' I quite like ancient philosophy, particularly Plato, and also political philosophy. I'd like to maybe write about censorship and freedom of the press, but I don't know if Plato touched on anything like this. I know CNN and Rupert Murdoch weren't around in his day but maybe in some passages of the Republic he referred to something to do with how much information should be given out to the public. I'm sure his ideas were fairly right wing whatever they were, but maybe somebody could refer me to a passage that I might be able to read in this light. Thanks for your help.