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US President Barack Obama speaks while standing next to peformer Kendrick Lamar (C) during an Independence Day Celebration for military members and administration staff on July 4, 2016 in the East Room of the White House in Washington, DC. / AFP / Mandel Ngan (Photo credit should read MANDEL NGAN/AFP/Getty Images)

US President Barack Obama speaks while standing next to peformer Kendrick Lamar (C) during an Independence Day Celebration for military members and administration staff on July 4, 2016 in the East Room of the White House in Washington, DC. / AFP / Mandel Ngan        (Photo credit should read MANDEL NGAN/AFP/Getty Images)

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NEW YORK, NY - MAY 04: U.S. President Barack Obama speaks during the launch of a nonprofit group, My Brother's Keeper Alliance at Lehman College in the Bronx borough on May 4, 2015 in New York City. The President arrived in New York City for several appearances including a taping of the Late Show with David Letterman. In the afternoon speech at the college the President addressed the racially charged turmoil in Baltimore and other American cities. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - MAY 04:  U.S. President Barack Obama speaks during the launch of a nonprofit group, My Brother's Keeper Alliance at Lehman College in the Bronx borough on May 4, 2015 in New York City. The President arrived in New York City for several appearances including a taping of the Late Show with David Letterman. In the afternoon speech at the college the President addressed the racially charged turmoil in Baltimore and other American cities.  (Photo by Spencer Platt/Getty Images)

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WASHINGTON, DC - SEPTEMBER 18: (AFP OUT) U.S. President Barack Obama (R) greets hip-hop artist Ludacris and other guests during a gathering of criminal actors, hip-hip artists, justice activists, state and local elected officials and community leaders in the Eisenhower Executive Office Building South Court Auditorium September 18, 2015 in Washington, DC. The leaders gathered for a screening of "Fixing the System," an upcoming special documentary about criminal justice reform. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 18:  (AFP OUT) U.S. President Barack Obama (R) greets hip-hop artist Ludacris and other guests during a gathering of criminal actors, hip-hip artists, justice activists, state and local elected officials and community leaders in the Eisenhower Executive Office Building South Court Auditorium September 18, 2015 in Washington, DC. The leaders gathered for a screening of "Fixing the System," an upcoming special documentary about criminal justice reform.  (Photo by Chip Somodevilla/Getty Images)

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PHILADELPHIA, PA - NOVEMBER 3: Rapper Sean "Diddy" Combs (L) greets rapper Jay-Z at a "Promote The Vote Block Party" in support of Democratic presidential nominee U.S. Sen. Barack Obama (D-IL) November 3, 2008 in Philadelphia, Pennsylvania. The Pennsylvania Campaign for Change staged the event one day before the U.S. presidential election between Obama and Republican presidential nominee Sen. John McCain (R-AZ). (Photo Jeff Fusco/Getty Images)

PHILADELPHIA, PA - NOVEMBER 3: Rapper Sean "Diddy" Combs (L) greets rapper Jay-Z at a "Promote The Vote Block Party" in support of Democratic presidential nominee U.S. Sen. Barack Obama (D-IL) November 3, 2008 in Philadelphia, Pennsylvania. The Pennsylvania Campaign for Change staged the event one day before the U.S. presidential election between Obama and Republican presidential nominee Sen. John McCain (R-AZ). (Photo Jeff Fusco/Getty Images)

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WASHINGTON, DC - JANUARY 21: Jay-Z and Beyonce exit the public ceremonial inauguration for U.S. President Barack Obama on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Rob Carr/Getty Images)

WASHINGTON, DC - JANUARY 21:  Jay-Z and Beyonce exit the public ceremonial inauguration for U.S. President Barack Obama on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States.  (Photo by Rob Carr/Getty Images)