cul·ture jam·mer
Etymology: “The Situationist International first made the comparison to radio jamming in 1968, when it proposed the use of guerrilla communication within mass media to sow confusion within the dominant culture. (Kalle Lasn, the founder of AdBusters magazine, wrote a book entitled Culture Jam, but the term predates his title.) It is also thought that the phrase might, in part, come from a 1969 episode of The Prisoner which involved subversives calling themselves ‘Jammers’, and attempting to disrupt the Orwellian Utopia the series took place in.” — Wikipedia

1. An activist who uses “existing mass media to comment on those very media themselves, using the original medium’s communication method.” — Wikipedia
2. A minor defacer and disparager of commercial symbols who thinks a little anarchism might help him get laid.

"Every culture jammer looks forward to scoring on Buy Nothing Day."