Yes but er.....what does it say??? If you are going to mess upour streets....at least make it political!

Please.

there's plenty of political, but the purpose of this gallery is not to display soley political graffiti, but to showcase all the talent from oxfords graffiti artists.

Grafitti is taking art onto the streets. I think this is already political. Something does not have to be making an overt political point to have relevance to our everyday political and social landscape.
The fact that it is illegal further politicises it.
Personally I'd much rather have grafitti on the streets than billboards and advertising.