Madonna took to social media to explain her intention with posts that sparked controversy on Friday.

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In order to promote her new album Rebel Heart, the entertainer shared altered photos of Martin Luther King, Jr. and Nelson Mandela mimicking the record's cover with similar string on their faces. The 56-year-old quickly received backlash from people who felt she was comparing herself to legendary political figures who fought for change.

"I'm sorry," the mother of four wrote on Facebook. "I'm not comparing my self to anyone. I'm admiring and acknowledging there Rebel Hearts."

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The singer, who added that it's not "a crime or an insult or racist," pointed out that she shared the same Photoshopped images of other famous faces, including Michael Jackson, Frida Kahlo and Marilyn Monroe.

"Am I saying I am them NO," she wrote. "I'm saying they are Rebel Hearts too. And I didn't do it, my fans did. And I just re posted those photos. My fans aren't racist either, If they put me in the same category as these other people. Thank you."

After her apology, Madonna went on to share a Photoshopped picture of Princess Diana with the caption, "Yes Princess Diana was. #rebelheart! Anyone who fights for freedom is a #rebelheart."

See the original artwork below, followed by the controversial images.

Tags: Madonna