NEW DELHI — A Hindu extremist mob in northern India assaulted two Christian couples and an attorney for several hours, accusing them of forced conversion. In Haryana state’s Titoli village, 5 miles from the city of Rohtak, the mob forced one of the Christians, a pastor, to set fire to a heap of Bibles while the Hindu extremists recorded videos that immediately went viral, resulting in 32 complaints to the police. Pastor Jehovah Das, 65, and Vinod Masih, 42, along with their wives, had been invited to a Christian family’s home in the village to pray and bless the arrival...