The moro-moro is a play that became popular in the Philippines during the Spanish colonial period. It depicted battles between Christians and Moros (Muslims in the Philippines), with the Moros as the perpetual villains who always lost to the Christians in the end. Progressive historians have viewed the moro-moro as a tactic by the Spanish colonizers to demonize the Moros, the largest ethnic group that successfully warded off attempts at conquering them.