not 30... maybe manipur and nagaland ( north east indian states ) but there is no other separatism in india othewise, not even the maoist militants ( naxalites ) demand this... believe me on this.
what many concerned and politically active indians want not freedom from india but establishment of a progressive system where they won't be discriminated on basis of caste, religion and money.
so when kanhaiya kumar, the recently popularized leftist leader in jnu university in delhi, and his comrades demanded aazadi it wasn't freedom from india... his slogan was :
"bhukmari se aazadi, saamantvaad se aazadi, punjivaad se aazadi, brahmanvaad se aazadi"
meaning :
freedom from hunger, freedom from feudalism, freedom from capitalism, freedom from the brahminical order
the demand of the progressives is overthrow of the corrupt and anti-human political system of india and replace it with a progressive system.