DALLAS, TX - JULY 12:  Police officers arrive at an interfaith memorial service, honoring five slain police officers, at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. A sniper opend fire following a Black Lives Matter march in Dallas killing five police officers and injuring 12 others. (Photo by Tom Pennington/Getty Images)
NEW YORK, NY - JULY 07: Activists protest in Times Square in response to the recent fatal shootings of two black men by police, July 7, 2016 in New York City. Protests and public outcry have grown in the days following the deaths of Alton Sterling on July 5, 2016 in Baton Rouge, Louisiana and Philando Castile on July 6, 2016, in Falcon Heights, Minnesota. (Photo by Yana Paskova/Getty Images)
John Lewis, left, and his husband Stuart Gaffney, plaintiffs in the 2008 Defense of Marriage Act (DOMA) case, hold flags and a sign reading 'Love is Supreme' outside City Hall after the U.S. Supreme Court same-sex marriage ruling in San Francisco, California, U.S., on Friday, June 26, 2015. Same-sex couples have a constitutional right to marry nationwide, the U.S. Supreme Court said in a historic ruling that caps the biggest civil rights transformation in a half-century. Photographer: Josh Edelson/Bloomberg via Getty Images
WASHINGTON, DC - NOVEMBER 21:  About 100 people gather to rally in support of President Barack Obama's executive action on immigration policy in Lafayette Square across from the White House November 21, 2014 in Washington, DC. Obama announced a plan on Thursday that would ease the threat of deportation for about 4.7 million undocumented immigrants in the United States.  (Photo by Chip Somodevilla/Getty Images)
WASHINGTON, DC - JULY 28: Anti-abortion activists hold a rally opposing federal funding for Planned Parenthood in front of the U.S. Capitol July 28, 2015 in Washington, DC. (Photo by Olivier Douliery/Getty Images)