What is the theme of On the Waterfront the movie?

The theme of "On the Waterfront" revolves around moral courage and redemption. It explores the struggles of individuals against corruption and the oppressive influence of organized crime, particularly within the labor union. The protagonist, Terry Malloy, grApples with his conscience, ultimately choosing to stand up for justice and integrity, highlighting the importance of personal responsibility and the fight for one's beliefs. The film also examines the complexities of loyalty, betrayal, and the quest for dignity in a corrupt system.