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President Barack Obama speaks at the Joplin High School commencement ceremony, Monday, May 21, 2012, at Missouri Southern State University in Joplin, Mo. (AP Photo/Pablo Martinez Monsivais)

Obama addresses Joplin high school class

President Barack Obama addressed the 2012 graduating class of Joplin High School May 21 at the school's commencement ceremony. The address came almost one year after severe tornadoes devastated the Missouri town.