the presidency. Oswald later killed a Dallas police officer during his escape from the crime scene, but was soon found hiding in a movie theater. He required police protection from an outraged public, and was held in protective custody. Oswald, who was a former member of the U.S. military, was unhappy with the president for his policies, but never admitted to being the assassin. Conspiracy theories involving rival political parties, the Cuban government, and organized crime have also been advanced as to who actually killed Kennedy.