Warning: This episode contains descriptions of violence. The relationship between two democratic allies fell to its lowest point in history this week, after Canada accused India of assassinating a Sikh community leader in British Columbia in June. Mujib Mashal, The Times’s South Asia bureau chief, explains this stunning accusation — and what India’s reaction to it tells us about the era of its leader, Narendra Modi. Guest: Mujib Mashal, The New York Times’s bureau chief for South Asia.