It is not a reflection of Narendra Modi who is endorsing such language in a subtle way, the issue is much deeper. NaMo is just a symptom and it is going to last, if not him then someone else.
The primary reason is the callous and selfish society that we are as a nation. National Interest comes last on our list of priorities, we have ignored the issues plaguing around us for far too long and it has created a vacuum of leadership in our country.
During Independence movement we had exceptional leaders who took the plunge to selflessly build the nation, they gave a promising direction to the country. Nation building became the task of few post then and eventually people with deep selfish interest rose to fill the vacuum.
Now what we see is a result of two generations of ignorance, it will continue unless a critical mass of people don't come forward to build the nation and make it their top priority. It is like in every other space the quality of product is mediocre in our country unless someone brings the exceptional product and we know there are few exceptional products.
We like it or not NaMo and such tribe are going to stay unless a generation takes it as a role to shift this. He is what we deserve and he is the best we deserve at this point of time. I am hopeful to witness the signs of shift in my lifetime.
PS. Its a difficult choice to rise and do something that doesn't have immediate result. There will 'n' reasons why you cant make this choice but there is only one reason to do and that's going to be YOUR personal calling. So, these choices are not for all to make, not everyone is cut out to be exceptional but we all have the sanity to recognise, look for and support such individuals.