The UN has invited a Black Lives Matter activist to participate in a high-level debate in New York on human rights, with a particular focus on “combatting discrimination and inequalities.” The two-day U.N. event Tuesday and Wednesday comes amid tensions over last week’s police shootings of two black men in Minnesota and Louisiana, and the killing by a gunman of five police officers during a Black Lives Matter protest march in Dallas. Hosted by U.N. General Assembly president Mogens Lykketoft, the event entitled “Human Rights at the center of the global agenda” involves keynote speeches, a plenary debate among ministers...