MOUNTAIN VIEW, CA – NOVEMBER 09: Singer Christina Aguilera performs onstage during the Breakthrough Prize Awards Ceremony Hosted By Seth MacFarlane at NASA Ames Research Center on November 9, 2014 in Mountain View, California. (Photo by Steve Jennings/Getty Images for Breakthrough Prize)
(Photo by Steve Jennings/Getty Images for Breakthrough Prize)Their new single is called "Fall In Line," and Christina released a powerful tweet behind it...
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