World AIDS Day (RED) 2014 Performance In Times Square(01 of10)
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Bruce Springsteen and U2 perform during the World AIDS Day (RED) concert In Times Square on Monday, Dec. 1, 2014 in New York. (Photo by Charles Sykes/Invision/AP) (credit:Charles Sykes/Invision/AP)
World AIDS Day (RED) 2014 Performance In Times Square(02 of10)
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Kanye West performs during the World AIDS Day (RED) concert In Times Square on Monday, Dec. 1, 2014 in New York. (Photo by Charles Sykes/Invision/AP) (credit:Charles Sykes/Invision/AP)
World Aids Day Concert - Times Square - New York(03 of10)
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Bruce Springsteen is performing during a special concert on Aids day in Times Square, New York, NY on December 1, 2014. (credit:Dennis Van Tine/ABACA USA)
World AIDS Day (RED) 2014 Performance In Times Square(04 of10)
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Kanye West performs during the World AIDS Day (RED) concert In Times Square on Monday, Dec. 1, 2014 in New York. (Photo by Charles Sykes/Invision/AP) (credit:Charles Sykes/Invision/AP)
World AIDS Day (RED) 2014 Performance In Times Square(05 of10)
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Bruce Springsteen performs during the World AIDS Day (RED) concert In Times Square on Monday, Dec. 1, 2014 in New York. (Photo by Charles Sykes/Invision/AP) (credit:Charles Sykes/Invision/AP)
World AIDS Day (RED) 2014 Performance In Times Square(06 of10)
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The Edge, from left, Larry Mullen Jr., Bruce Springsteen, Carrie Underwood, Kanye West and Chris Martin appear on stage during the World AIDS Day (RED) concert In Times Square on Monday, Dec. 1, 2014 in New York. (Photo by Charles Sykes/Invision/AP) (credit:Charles Sykes/Invision/AP)
World Aids Day Concert - Times Square - New York(07 of10)
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President Bill Clinton during a special concert on Aids day in Times Square, New York, NY on December 1, 2014. (credit:Dennis Van Tine/ABACA USA)
Kim Kardashian Raises Toast For Elizabeth Taylor Foundation/World AIDS Day At The Abbey(08 of10)
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WEST HOLLYWOOD, CA - DECEMBER 01: Kim Kardashian raises a toast for Elizabeth Taylor Foundation/World AIDS Day held at The Abbey on December 1, 2014 in West Hollywood, California. (Photo by Michael Tran/FilmMagic) (credit:Michael Tran via Getty Images)
Kim Kardashian Raises Toast For Elizabeth Taylor Foundation/World AIDS Day At The Abbey(09 of10)
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WEST HOLLYWOOD, CA - DECEMBER 01: Kris Jenner raises a toast for Elizabeth Taylor Foundation/World AIDS Day held at The Abbey on December 1, 2014 in West Hollywood, California. (Photo by Michael Tran/FilmMagic) (credit:Michael Tran via Getty Images)
World Aids Day(10 of10)
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People pin ribbons of support on the EASY sign promoting the opening of a permanent AIDS testing facility in Sydney, Dec. 01, 2014. A fast and free HIV testing clinic will open on Sydney\'s Oxford Street in time for Mardi Gras. (AAP Image/Britta Campion) (credit:BRITTA CAMPION/AAP)