Shepard Fairey, the graphic artist behind the iconic Obama "HOPE" poster and the OBEY Giant, has given his stamp of approval to the Stamp Stampede - a campaign to stamp dollar bills with messages like "Not To Be Used For Bribing Politicians."

The Stampede is part of a movement pushing for a constitutional amendment to get money out of politics, with 16 states and 111 congressmen supporting such an amendment.

To learn more, watch here:

Stamp Stampede - Economic Jusitsu from Stamp Stampede on Vimeo.