Back in 1947, India’s constitution writers envisaged a secular state where all citizens were equal before the law. But the rise of Hindu nationalism has been testing that ideal. Since Narendra Modi became prime minister in 2014, hard-liners in his Bharatiya Janata Party (BJP) have become increasingly emboldened in promoting the dominance of its Hindus, who form 80% of the population. In December protests broke out over a restrictive new citizenship law — the latest in a string of actions worryi