Novak Djokovic was bothered by a fan and his behaviour while drunk and Becker feels that umpires need to intervene on behalf of the players.
Djokovic asked the umpire to do something about it as he heckled Djokovic specifically. The spectator in question also seemed to be under the influence of alcohol making this worse. Eventually, the umpire complied and the spectator was escorted out of the arena but Becker feels it should have been done earlier:
“I can understand him. If four or five boozy fans come to the court with the motivation to disturb Novak during many points, then the referee has to intervene at some point because it becomes unfair. I like loud fans - passion and emotion are part of the game, but if they were really drunk, then they don't belong on a sports court.”