"Bosozoku"(Japanese: "running out of control tribe") is a Japanese teenage motorcycle gang. They commit noise pollution, destruction of traffic order(such as running toll booths) and violence. However, the road traffic law was amended in Japan in 2004, and now the number of "Bosozoku" gang members has decreased.
Bosozoku gangs were originally founded by WW2 veterans, similar to American "1 Percenter" motorcycle gangs such as the Hell's Angels. However, unlike their American counterparts, they quickly became youth-dominated, and by the 70s the familiar appearance began to take shape. In the final decades of the 20th century, bosozoku gangs would be Japan's dominant form of youth delinquency.