People say painting graffiti doesn't change anything, but the GLA committee found that 'house prices can drop by as much as 10% in badly affected are… - Banksy

Policemen and security guards wear hats with a peak that comes down low over their eyes. Apparently this is a psychological technique, because eyebrows are very expressive, they let you down if you're lying or trying to bully somebody. You have far more authority if you keep them covered up. The advantage of this is that if makes it difficult for your average cop to see anything more than six foot off the ground. Which is why painting rooftops and bridges is so easy.

I mean, they say you die twice. One time when you stop breathing and a second time, a bit later on, when somebody says your name for the last time.

After sticking up the picture I took five minutes to watch what happened next. A sea of people walked up, stared and left looking confused and slightly cheated. I felt like a true modern artist.