Aamir Khan, one of Bollywood’s leading men, has reopened a debate about tolerance and free expression in India, prompting a torrent of criticism on social media. On Monday evening, at an event in New Delhi hosted by the Indian Express newspaper, Mr. Khan told an audience that his wife, Kiran Rao, had suggested moving from the country. “That’s a disastrous and very big statement for Kiran to make to me,” Mr. Khan said. “She fears for her child, she fears what this atmosphere around us will be, she feels scared to open the newspapers everyday.”