"This publicity image released by Parkwood Entertainment shows singer Beyonce performing during her world tour on Saturday, July 13, 2013 at the Bridgestone Arena in Nashville, Tenn. Beyonce called for a moment of silence for Trayvon Martin during a concert just hours after George Zimmerman was found not guilty by a Florida jury on Saturday. After asking the crowd to be silent a moment, she sang the chorus of ""I Will Always Love You,"" a song written by country music star Dolly Parton and brought to a global audience by the late Whitney Houston. (AP Photo/Parkwood Entertainment, Robin Harper)"
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