The 2007 film 300 was criticized for its racist portrayal of combatants in the Persian army at the Battle of Thermopylae .
The 2007 film 300 is an adaptation of Frank Miller 's 1998 graphic novel .
The 2007 film 300 , an adaptation of Frank Miller 's 1998 graphic novel , was criticized for its racist portrayal of combatants in the Persian army at the Battle of Thermopylae .