In the protests over Iran's disputed presidential election results, hundreds of demonstrators were arrested and sent to Iranian prisons. Now there are accounts alleging that guards abused some imprisoned protestors. Outrage is growing as detainees detail abuse to their relatives, or when bruised and battered bodies are returned to families. President Mahmoud Ahmadinejad issued a letter urging the head of the judiciary to show “Islamic mercy” to the detainees, and on Monday Iran’s supreme leader, Ayatollah Ali Khamenei, personally intervened and closed an especially notorious detention center. For more, we turn to Robert Worth, Beirut bureau chief for our partners The New York Times.