I agree with u bro, i remember when i had gone to see ind aus world cup match in 1996 at wankhede how the aussie supporters were harrased and the indian cops did nothing ... Indian crowds had also got famous for pelting stones at visiting teams inbetween if u remember .. so u rightly said what one sows is what one gets !!
I disagree here. "You reap what you sow" holds good when taking about an individual. Not when you are talking in a generic sense. The lady who got beer cans thrown at her, or the guy who got slapped may not have ever misbehaved at a stadium. They are certainly not reaping what they sowed!
When Indian crowd gets boorish, people do take strong notice of that. Eden Gardens was not given an international game for a long time after crowd misbehavior. Spectators were ejected and made to appear before a court for racially taunting Symonds. Pointing flaws at others does not mean turning a blind eye to our own shortcomings.
This was serious misbehavior. Not some jeering or banter which can be brushed off as part of sports rivalry. Beer cans have been thrown, people slapped and forcibly made to wave the Lankan flag. Don't think this can be brushed off as routine in any case - even if it happens in other sports, or in the same sport in India.