3. Charley (On The Waterfront)
In Elia Kazan's classic drama about corruption, the young Terry Malloy debates testifying against Johnny Friendly, the local union leader who has a penchant for snuffing out voices of dissent. In perhaps the most famous monologue in cinema history, Malloy speaks with his brother, Friendly's right hand man. Terry blames his brother for his spot in life; had he not taken a dive in a boxing match to win a wager for Friendly, his career would've taken off. In his final- and perhaps only- act of brotherly love, Charley gives Terry a gun and tells him to get out of dodge. Having disobeyed his boss, Charley is then killed. His death is the final straw, leading Terry to stand up against the oppressive union leader once and for all.