When Indian Prime Minister Narendra Modi visited the southern city of Chennai recently, he must’ve been startled by the welcome he received. Half the city, it seemed, had turned out to wave black flags at his motorcade, as well as banners that read “Go Back, Modi.” When the prime minister hopped into a helicopter, the crowds cleverly sent up black balloons in its wake.
The vitriol wasn’t entirely personal. Protesters in Chennai — the capital of the prosperous state of Tamil Nadu — had singled out Modi as the most high-profile representative of a New Delhi establishment that many Tamils

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