For two weeks, Kashmir, India’s sole Muslim-majority state, has existed in a surreal state of nonexistence. Since a presidential decree abolished the state, revoked its autonomy and partitioned it into two federally administered territories, the Internet has been shut down, cellular networks have been disabled, and even landlines went dead. Public assembly is banned, and citizens are under curfew. A soldier has been stationed outside every house in some villages. Eight million people have been cut off from the world — and from one another. Pharmacies are running out of medicine, households are low on food, and hospitals are clogging up with injured protesters. Narendra Modi, India’s prime minister, insists that all this is for the good of the Kashmiris. India’s grip on Kashmir has seldom been stronger. Its hold on Kashmiris, however, has never been more threadbare.

Modi’s sudden takeover in Kashmir is the fulfillment of a long ideological yearning to make a predominantly Muslim population surrender to his vision of a homogeneous Hindu nation. It is also a way of conveying to the rest of India — a union of dizzyingly diverse states — that no one is exempt from the Hindu-power paradise he wants to build on the subcontinent. Kashmir is both a warning and a template: Any state that deviates from this vision can be brought under Delhi’s thumb in the name of “unity.”