Grond,
Actually, in the 1970's, several of the Boston Bruins players climbed over the glass and beat up some fans. It wasn't the riot that this NBA free for all was, however. It was "controlled violence".
The fans in the seats above the glass threw items at the Bruins. the players "pointed" their stick at the fans and threatened to "beat them with their own shoes".
The fan grabbed the stick, the players climbed up, and believe it or not they actually beat this guy up with his own shoe!
Terry O'Reilly was an expected member of the guilty party, but so was Mike Milbury who is now GM in Long Island I believe.
Different set of circumstances, to be certain, but it was pro-players fighting fans.
Ugly.