For the past two years, artists across the United Kingdom have been doing something bold ... and illegal. They perform these "takeovers" where they remove existing advertisements from bus stops and replace them with messages that are non-sponsored and speak directly to the people who use the streets. It's not for promotion — the point is to take away just a couple lanes of corporate-driven communication and remind people to think about other, more important topics (and to think for themselves). Here are some of their messages. Enjoy.