A student from Georgetown University, who asked not to be named, sings the call to prayer as a group of Muslim people and their supporters prepare to say the Friday prayers outside the White House in Washington, Friday, Feb. 13, 2015, in the wake of the murder of three young North Carolina Muslims. The gathering was in memory of the Chapel Hill shooting victims, and to press federal authorities for a hate crime investigation.? (AP Photo/Jacquelyn Martin)
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