Totally Agree with you Jayshree about today's environment but not agree with the following sentance written by you "One thing should consider here - Why these things are not happened in our olden days and why it is happening frequently".
These things were also happening in olden days but there wasn't any media and news system so, these things were easily hide behind curtains. Even today I want to say the condition is not totally changed.
Few more things are, girls are getting harassment from their known people (most of time) and their relatives (in nos. of cases). A very shamefull thing. And after that family members forces girls to keep silent for saving their family respect. So, women become helpless in that conditions. So, its the responsibility of all of us to spread awareness in society about all these shamefull things.
And what about killing girl child in womb? It is doing by the people who are well qualified and litterate. But their mentality has not changed, it is still 100 years old.