(L-R) Mother of chokehold victim Eric Garner, Gwen Carr, and widow Esaw Garner, sit next to Reverend Al Sharpton at the National Action Network's House of Justice in New York August 15, 2015. Reverend Sharpton, joined by clergy members spoke at the event and urged parishioners to call upon leaders to back U.S. President Barack Obama's Iran treaty. REUTERS/Andrew Kelly