Is capital punishment suitable for those who think differently?

Why does the Iranian government persist with it's policy o ftorturing political prisoners?

"The news of Hojjat Zamani's execution generated a wave of outrage against the religious dictatorship in Iran and across the world."

"Hojjat was deeply respected and very much loved for his character, his compassion and above all his dedication to the cause of Iranian people, freedom and democracy."

"Hojjat, a member of the People's Mojahedin Organization of Iran, was 31 when he was hanged on February 7. Those with experience of clerical regime's prisons admired his determination in defense of his ideals. He tolerated a variety of the most horrific physical and mental tortures for over four years but in the end it was the mullahs' henchmen who conceded defeat before his will to rid Iran of the Islamic fundamentalism, the enemy of humanity. His firmness was a source of courage for everyone in particular his fellow prisoners."

Iran: International solidarity with PMOI in wake of a political execution