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Microblogging - more than fun? Martin Ebner Social Learning Computer and Information Services Graz University of Technology Steyrergasse 30, A-8010 Graz, Austria martin.ebner@tugraz.at Mandy Schiefner Center for Teaching and Learning University of Zurich Hirschengraben 84, CH-8001 Zurich, Switzerland mandy.schiefner@access.uzh.ch

Martin Luther King Jr. (born Michael King Jr.; January 15, 1929 - April 4, 1968) was an American Baptist minister and activist who became the most visible spokesperson and leader in the civil rights movement from 1955 until his assassination in 1968.

"Turn Up the Radio" is a song recorded by American recording artist Madonna for her twelfth studio album, MDNA (2012). It was written by Madonna, Martin Solveig, Michael Tordjman, and Jade Williams, and produced by Madonna and Solveig.