According to Gallup, more than 4 in 10 Americans (43%) admit to feeling at least "a little" prejudice toward Muslims. This is more than twice the number who say the same about Christians (18%), and almost three times more than that of Jews (15%) and Buddhists (14%). The poll questioned Americans about knowledge of Islam, to which 63% of Americans said they have "very little" knowledge or "none at all."

The Pew Research Center released a comprehensive demographic study of more than 200 countries this week. It found that there are 1.57 billion Muslims living in the world today, representing 23% of an estimated world population of 6.8 billion. It also found that many Muslim populations live in places they had not expected.