Arvind Kejriwal’s imprisonment is a stain on India’s democracy

With just over three weeks to go until the start of a general election Narendra Modi, India’s prime minister, has little reason to worry about the outcome. His popularity is at an all-time high both at home and abroad. His ruling Bharatiya Janata Party (BJP) is expected to win re-election comfortably. But the government is not resting easy. It appears to have stepped up a campaign to quash dissent. That makes many concerned that, were Mr Modi to win a third term, he may become even less tolerant of the opposition.