My Dad won't let me put a picture of me on Facebook?

[Jane]

I think that when you were 14, they probably didn't have a clue! They have no doubt become recently aware due to stuff in the media, have become worried ( as parents do about their kids) and clamped down on you out of fear and ignorance. And this is not just about them being as you describe 'freshie indians', many parents of all cultures are worried about their kids being vulnerable on-line.

You sound like a sensible person who has an understanding of how social networking happens, and that you know more than your parents.
Of course you know that any material you place on-line will remain. As someone who has been involved in recruitment for many years, I will tell you that when I am seriously considering someone for a job, I will FB and google search them, so check what is available about you and do a clean up if needed.