Did someone go around attacking people with nunchaku years ago or something?
There was a rash of nunchaku attacks in the early 1970s as a result of young (and stupid) hoodlums emulating then-popular Hong Kong chop-socky kung fu exploitation movies.
<activate stilted chop-socky overdub voice>
"Sooo! You think you can match my nunchuck skills with your southern dragon fist!"
swish swish swish WHACK!
<change to normal voice>
"Oh, dude, I'm sorry! Is your nose OK?"
Anti-crime right-wing control freaks in various state legislatures responded to this "scourge" by outlawing nunchucks.