Why did Lee Harvey Oswald shoot JFK? We’ll never know. Jack Ruby saw to that. But we do know why Sirhan Bishara Sirhan assassinated Robert F. Kennedy in 1968. Sirhan was captured. And over the course of his life sentence, he’s gone on record about what motivated him. Patrick Magee, the Brighton bomber, is less talkative. Magee tried to blow up Prime Minister Margaret Thatcher and her cabinet in 1984 – and he almost succeeded. Magee was a terrorist, a member of the Irish Republican Army. But was he a psychopath? And was Sirhan? We’ve been looking for answers.