Riot police launch tear gas toward activists in downtown Albuquerque, N.M., last month following a 10-hour protest around the city, in response to a deadly police shooting. Russell Contreras/AP hide caption

itoggle caption Russell Contreras/AP

Riot police faced off with protesters Sunday, during a demonstration against recent police shootings in Albuquerque, N.M. The march lasted at least nine hours. Russell Contreras/AP hide caption

itoggle caption Russell Contreras/AP