Archbishop Michael Fitzgerald is one of the Catholic Church's top experts on Islam. He has served the Vatican in places such as Tunisia, Uganda and Egypt, and now is promoting interfaith understanding by teaching Jesuit students in Cleveland about the Quran. /Rob Wetzler hide caption

itoggle caption /Rob Wetzler

The HBO documentary Going Clear: Scientology and the Prison of Belief airs Sunday — over the vigorous objection of Scientology officials. Courtesy of HBO hide caption

itoggle caption Courtesy of HBO

Boys in Uppsala, Sweden, read supportive messages placed at the entrance of a mosque following an attack in January. A new Pew study finds that religious intolerance is a global problem, with Muslims facing more hostility from individuals, and Christians from governments. Targeting of Jews, the study found, has gotten worse over in recent years. Anders Wiklund/AP hide caption

itoggle caption Anders Wiklund/AP

Mohamed Magid, imam with the All Dulles Area Muslim Society, speaks during in September during an anti-extremism news conference. He says that if someone with dangerous views comes to his mosque, he first tries to correct them, but reports them to authorities if necessary. Michael Reynolds/EPA/Landov hide caption

itoggle caption Michael Reynolds/EPA/Landov

This image provided by the Durham County Sheriff's Office shows a booking photo of Craig Stephen Hicks, 46, who was arrested on three counts of murder early Wednesday. On his Facebook page, Hicks described himself as a gun-toting atheist. Durham County Sheriff's Office/AP hide caption

itoggle caption Durham County Sheriff's Office/AP