The Pew Research Center is a major social science resource for the nation. Its Religion and Public Life sector has produced some very informative and tellingly illustrated reports. Earlier this year they produced Restrictions and Hostilities around the World. It is worth noting that in this ranking the U.S. does not rank number one in religious freedoms.
Last year, their comparative report on increasing levels of hostility to religious people and their practices illustrates the growing and very large percentage of the world’s population that lives under such conditions.