bumper sticker activism 

To tell the world what they should be doing and what you think by plastering your car with bumper stickers to that effect.

Jim: That "Keep Tahoe Blue" sticker is really making me wonder how to keep Tahoe blue.
Mike: Yeah, Berkeley is full of bumper sticker activism. Too bad the sticker's on a Ford Expedition, since keeping Tahoe blue involves reducing emissions.

bumper sticker activism by wendyrocks November 6, 2006

bumper sticker activism 

As said by the Rockman in “The Point”; “A Point in every direction is the same as No Point at all”

Doris: look at all those bumper stickers!
Dad: we all know what that says about bumper sticker activism!

bumper sticker activism by pendraggon December 9, 2008