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Just blame Bruce Lee. Back in 1974, New York state decided to ban the possession of nunchucks as lawmakers feared they were becoming enticing tools of violence among hooligan children and street criminals who were exposed to the weapons on TV. They were so dangerous, lawmakers believed, that not even karate teachers could keep them in a locker at home.

But while being dangerous might have been a good enough reason then, it doesn’t cut it anymore, as a federal judge ruled Friday.

In a 32-page ruling, U.S. District Judge Pamela Chen struck down New York’s nunchuck ban as unconstitutional, finding that nunchucks are protected under the Second Amendment right to bear arms.

Chen concluded that nunchucks are commonly used by law-abiding citizens - for example, by karate enthusiasts, or for self-defense - so therefore banning them outright runs afoul of the Second Amendment. The judge also applied a 2010 landmark Supreme Court ruling that extended the Second Amendment to state laws.

But while the nunchucks ruling may be an important affirmation of those principles for gun-rights advocates, after nearly 15 years of litigation, the ruling also represents a long-sought victory for one New York amateur martial artist.

James Maloney, who is also a lawyer, had been arrested for possessing nunchucks at home in 2000. Since 2003, while representing himself, he has argued that the law prevented him from teaching his children specialized karate moves that he invented, involving use of the nunchucks. He called his style “Shafan Ha Lavan.”

Maloney’s children are now grown. But his goal in the case extended well beyond passing down a

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