London premiere for Bobby
The movie tells the story of 22 characters surrounding real-life US Senator Robert F. Kennedy and the days prior to his assassination in 1968.
It stars Lindsay Lohan, Laurence Fishburne, William H. Macy and Ashton Kutcher among others, while director Estevez also features.
"He's Bobby Kennedy. He's the last great American hero and he was a true visionary," he told Empire Online.
"No one was bigger than Bobby Kennedy. He was charismatic. He was brilliant and he was bright."
Emilio Estevez returns to the limelight after starring in a number of movies in the 1980s. His roster of films includes Young Guns, Stakeout, The Breakfast Club and St. Elmo's Fire.
Bobby is due to be released in the UK early next year.
Titles related to this article