Four of the five most populous countries in the world share a disturbing reality: Christians are systematically and harshly persecuted within their borders, according to data from multiple religious freedom watchdog groups. China (1.41 billion people), India (1.46 billion people), Indonesia (285 million people), and Pakistan (255 million people) routinely strip Christians of fundamental human rights like worshipping freely and sharing their faith with others. The only county in the top five t...