TOPSHOT – Demonstrators from the Black Lives Matter movement march through central London on July 10, 2016, during a demonstration against the killing of black men by police in the US.
Police arrested scores of people in demonstrations overnight Saturday to Sunday in several US cities, as racial tensions simmer over the killing of black men by police. / AFP / DANIEL LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)