Unfortunately, "heckling" is now being equated to "bullying" when, if done properly and effectively, can be witty to the point of making the target laugh and thus throw off their game. There were many a game back in the day when members of the FSC would sit along the baseline close to the visitor's bench and heckle the opposition to this effect. Of course, it was much easier to get their attention when there were only about 2-3K in the arena...
The FSC had their day, to be sure, but waaaaay back, when we still played basketball in the Lynn Gym, i.e. what is now the RAC before it was the RAC, there was a group called the Bastards. They sat in the stands right behind the visitors bench and would ride them all game long.