Whirl-Mart is a form of culture jamming that began in 2001 and has since spread internationally.  Participants silently push empty carts through the aisles of a large retail store without purchasing anything as a form of performance art. These events allow activists to reclaim space peacefully while taking symbolic action against consumerism.

http://en.wikipedia.org/wiki/Whirl-Mart

http://archive.org/details/WhirlMart

 

Image Credit: Ecureuil Espagnol for www.consumehastamorir.org /Wikimedia Commons  CC-BY-SA-3.0