Enrique Metinides

Enrique Metinides is a Mexican photographer who work captures a number of heinous  crimes commited in Mexico City. His documentary style encapsulates the raw and horrifying streets, starting from the 1960s and spanning over the next few decades. Much of his earlier works are in color and are not focused on the people of Mexico but as the years go by, he adds color to his work and creates deathly portraits of the poor victims of crimes.

http://www.slate.com/blogs/behold/2013/03/11/enrique_metinides_101_tragedies_of_enrique_metinides_documents_50_years.html