Bhagat Singhâ€™s life is one of the supreme ironies of history. He did not believe in the cult of the bomb and the pistol. Yet he was arrested for throwing a bomb in the Central Legislative Assembly. And he was hanged in 1931 for killing a police officer with a pistol.Many great revolutionaries have now become mere names in history books. But Bhagat Singh still remains a living part of national memory, 70 years after he was hanged.