Fire extinguisher + KRINK ink = mass defacement technology. Watch as Katsu, a subject studied by Graffiti Research Lab, tears up walls with his nifty addition to the technology of mass defacement. Take a gander through the eye’s of Katsu while he, or she takes this invention for a test run.

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Dick Cheney takes a blow as G.R.L. and their mobile broadcast unit take to the streets. Graffiti Research Lab draws a crowd of interested citizens with similar interests and beliefs. Funny things on big walls.

G.R.L. strikes again with their mobile broadcast unit, but this time, their target is Barcelona. Police and authority figures are the primary subjects of this feature. Graffiti Research Lab tops the cake in this newly added video.

No flute here, just a Tricycle, a car battery, an inverter, an amp and some speakers. Graffiti Research Lab mobs through Manhatten and eventually over the bridge into Brooklyn. Compare reactions of the people in Manhattan with the ones in Brooklyn.

Lights in the city. GRL’s ‘Mobile Broadcast Unit’ can write on walls and get away without any prosecution a great deal of the time. Take a DLP projector, an astronomy camera, a laptop, some OF software, a Tricycle, a generator and/or battery/inverter combination and an outlawed laser pointer, mix them all together, and you have yourself an official ‘Mobile Broadcast Unit.’ Check it out in action below. Be sure to check out the rest of GRL’s stuff here as well.

From March 1st - April 7th, the Graffiti Research Lab is declaring NYC an OPEN CITY. All the streets and walls have been turned over to the bombers, pranksters and protesters. As a triumph for the GRL’s foreign conquests, and for all the anonymous public works made by servants of the street at home and abroad, Eyebeam is presenting an exhibition and series of free screenings and workshops that reveal the tools and tactics of graffiti writers, artists, protesters, pranksters and hackers who are reclaiming our cities by any means necessary.