Naxalites, what about them. They have grievances against the state, but what are you trying to justify. They are powerful where the state is weak like forests and districts populated by tribals. Yes people fight between castes. This is the same pretext East India Company used to takeover India. You sound like one of them. But people have come to unite in some form after a long time and thy exercise adult franchise to vote and select their leaders. It's an evolving process. But people shouldn't take this weaknesses as a pretext to start revolts in regions through misionary maneuvering or jehadi training.