chalk

Pictured above: Rainbow doggy. Pictured here: Caption doggies. Learn the difference!

For the uninitiated, here's a quick look at everyone's favorite casually-spraying-protesters cop.

Check out more of Philippe Baudelocque's chalk art here!

Well, I think that about does it for chalk signs. We've maybe hit the limit, WINners.

Check out more from this artist here! Thanks to user Hikage for sharing the link!