An El Paso woman learned a horrible secret about her family: her great-grandfather had been massacred, along with 14 other men and boys, on Jan. 28, 1918. When Arlinda Valencia learned who was to blame for the terrible act, she realized more needed to be done to expose the dark past of a legendary law enforcement agency, the Texas Rangers.

Learn more about the massacre: https://www.porvenirmassacre.org/