Many plains people the Meiteis resent the Indian government. The hill tribes Nagas, Kukis, Zomi/Chin resent the Indian government, the Meiteis and each other. The Zomi/Chin would like to be united in an independent state with their co-tribespeople in Burma. There are multiple competing tribal militias, who extort money from their countrymen, block roads, and occasionally erupt into warfare/killing. Imphal is generally safe see the UK Foreign and Commonwealth Office website, but other areas should only be visited with good local information, and the word 'disturbed' means no-go.