Behaviour from Harbhajan or Sreesanth is just an outcome of Media attention and huge Money involved with cricket. When initially some Indians show some aggression (misbehaviour?) entire Indian Media were praising them, that made these cricketers to think they can do anything on field that will be praised by the media. And these so called poster boys need to be in limelight always as it becomes an addiction for them, thus they need all these slapping act when their performances are at a low. So blame media for all these attention they are giving for misbehaviours in the name of aggression and Money(You can't really blame!)..:)