Adolf Hitler (The Twilight Zone)

"Where will he go next, this phantom from another time, this resurrected ghost of a previous nightmare - Chicago? Los Angeles? Miami, Florida? Vincennes, Indiana? Syracuse, New York? Anyplace, everyplace, where there's hate, where there's prejudice, where there's bigotry. He's alive. He's alive so long as these evils exist. Remember that when he comes to your town. Remember it when you hear his voice speaking out through others. Remember it when you hear a name called, a minority attacked, any blind, unreasoning assault on a people or any human being. He's alive because through these things we keep him alive."

Adolf Hitler is the shadowy true antagonist of the Twilight Zone episode "He's Alive" - which popularized the idea that tyrants such as Adolf Hitler may die as people but can continue to influence the world via the actions of others.

Story
Peter Vollmer, the leader of a small and struggling Neo-Nazi group, is visited by a shadowy figure who teaches him how to enthrall a crowd. The figure instructs Vollmer to arrange the death of one of his followers, Nick, thereby creating a martyr to rally everyone around. Following the figure's instructions and assistance, Vollmer is considerably more successful and his group's following grows. However, the elderly Jewish man that Vollmer lives with, Ernst Ganz, spent nine years in Dachau and strongly disapproves of Vollmer's politics. Ernst disrupts a rally, accusing Vollmer of being "nothing but a cheap copy" of Adolf Hitler. After the failed rally, responding to the shadowy man's accusation that Vollmer has the instincts of a rabbit, Vollmer demands to know who his mysterious benefactor is. The man steps forward from the shadows to reveal himself to be Adolf Hitler.

The figure orders Peter to kill Ernst, and Peter steels himself enough to complete the task. Hitler congratulates him and asks him how it felt. Peter replies that he felt immortal. Hitler's thundering response is "Mr. Vollmer! We ARE immortal!" Afterwards, police arrive to arrest Peter for complicity to commit Nick's murder; he is shot while fleeing the scene. Peter stares at his bullet wound, astonished by the pain...and by the sight of his own blood. He addresses the police: "There's something very wrong here...Don't you understand that I'm made out of steel!?"

Hitler leaves the dying Vollmer, looking for a more worthy candidate.