Beyoncé Debuts 'I Was Here' for World Humanitarian Day [VIDEO]

Mega-star Beyoncé debuted the music video for her latest single "I Was Here," filmed in New York's U.N. General Assembly, in honor of World Humanitarian Day, Aug. 19. Beyoncé is launching a campaign rallying for the U.N.'s annual celebration of humanitarian work, which encourages people to do good for others.

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