Policemen and security guards wear hats with a peak that comes down low over their eyes. Apparently this is for psychological reasons. Eyebrows are very expressive and you appear a lot more authoritative if you keep them covered up. The advantage of this is that it makes a lot harder for cops to see anything more than six foot off the ground. Which is why painting rooftops and bridges is so easy.
BanksyWriting graffiti is about the most honest way you can be an artist. It takes no money to do it, you don't need an education to understand it, and there's no admission fee.
Banksy