This t-shirt design is so awesome! It's a excellent mash-up of Dirty Harry and Harry Potter. Here's a fun little description.
Police Inspector “Dirty” Harry Potter is a hot-headed rookie fresh out of the Hogwarts Police Academy. His first assignment is a sadistic serial killer known only as “Voldemort”. Dirty Harry will stop at nothing to solve this crime even if it means roughing up a few muggles along the way.
The Dirty Harry Potter t-shirt is available in several of colors, and only costs $11 plus shipping.