What he is trying to do is simply divide and rule.
Make north indians to fight with south and cause a massive voilence. Who does he thinks will benefit no one else but the people who still want to massacre people.
We boast that our is a country which has "Unity in Diversity" is this the kind of diversity we are talking about.
I agree with Raj that mumbai is overflowing with migrants. Ok do some checks and balance the migrant inflows, but dont jump into goondaism. What do you expect if you jump into goondaism that maharastrians will be sparedin north whenever or wherever they are staying. You cant make every change.
Be practical or else it will be your own doom's day.
