Mobile Chalk Printing

A protestor who invented a wireless bike-mounted street printing gadget has been arrested in NYC whilst explaining his device in an MSNBC interview. Wired background story
A video of his arrest and the surrounding curfuffle can be found on the inventor, Joshua Kinberg's website in quicktime and torrent links:
Arrest live!

"Bikes Against Bush is an interactive protest/performance occurring simultaneously online and on the streets of NYC during the Republican National Convention. Using a wireless Internet enabled bicycle outfitted with a custom-designed printing device, the Bikes Against Bush bicycle can print text messages sent from web users directly onto the streets of Manhattan in water-soluble chalk."

Kinberg says of his arrest, "I had not demonstrated the device, but was merely describing the project and the goal's of the performance to the media when a van with 5-6 police officers arrived. I produced Identification upon their request, after which they waited for a superior to arrive before arresting me. I was booked, fingerprinted, and photographed.
They had bomb squad inspect my device, and afterwards they congratulated me on the design calling it "genius." Intelligence detectives questioned me about "violent protestors," but seemed disappointed to learn that I am an artist and only know other artists, and had no knowledge of any violence being planned. All my equipment -- bicycle, computer, cell phone, and electronics are being held till further notice. I am scheduled to appear in court on Friday and am facing the possibilty of jail time."