The 2012 Olympics about to get underway in London in a few days, but one event that has been in full swing is the crackdown of the unauthorized usage of the Olympic brand by the International Olympic Committee. Which of course means that graffiti artists in the UK have been hard at work. Here are a couple of great examples attributed to Banksy (top) and Criminal Chalklist (although that is also in dispute as the original image is in turn attributed to Maximilian Holden Perchik). Solid Gold.