They knew what they are doing, and if they decided that they'll have sex at the party, or Orgy at home, we are no one to judge them and invade their privacy.
What was happening , was happening behind close doors and neither should we judge them because it's not affecting us in anyway and it is none of our business.
^Its also high time youth should understand the "limit".
@eggman. Agreed with most of the points. But we also have to keep in mind that
we live in a 'Family', or broadly, in a 'Society'. We are the ones who make this Society, and put certain guidelines or philosophy of life.
We are not an isolated being. We have 'relations' in life. We (youth) are the backbone of society. We are someone's brother, someone's son, someone's father/mother. We have a whole life to live, with 'some' basic principles, which make our identity in world.
There are some things, which our society wouldn't want to have, like this 'Rave Party Culture'. There have to be a "Limit", as the @dashing.sujay said. Otherwise, a conflict between parts of society arises, which we sometimes call 'Generation Gap'. But this "Gap" sometimes gets so huge, that incidents like Manglore happen. I am nobody to judge whether it's right or wrong, or whether it's moral or immoral. But morality is a 'Self Explanatory' thing, which differs from one Society to another.
There is fine line between 'Independence' and 'Freedom'. There is difference between 'Swatantrata' and 'Swacchandata'. Such incidents invoke anger from different parts of society, for both sides. So
why this 'Anger' is there? We have to think about it, since we are a 'Social Being'. Those young boys and girls there also belong to our Society. So by doing 'Rave Parties', they may be enjoying themselves behind 'Closed Doors', but later on in life, they might regret it.