"Every year, on the Saturday before Halloween, a strange ritual is carried out behind the Home Depot in Bed-Stuy, where hundreds of individuals gather on a dead-end street to party with a small regiment of weird, retro-fitted bikes. This is Bike Kill [...]" (http://gothamist.com/2013/10/23/halloween_starts_this_weekend_with.php).
Bike Kill in Brooklyn, New York City is being organised by the New York City Chapter of Black Label Bike Club (BLBC), founded in 1992 in Minneapolis, Minnesota. The BCBL has been documented in a movie called B.I.K.E. (also see B.I.K.E. Movie Trailer.
Bike Kill in Brooklyn, New York City