DUBAI, United Arab Emirates — As Iran returned to uneasy calm after a wave of protests that drew a bloody crackdown, a senior hard-line cleric called Friday for the death penalty for detained demonstrators and directly threatened U.S. President Donald Trump — evidence of the rage gripping authorities in the Islamic Republic. Harsh repression that has left several thousand people dead appears to have succeeded in stifling demonstrations that began Dec. 28 over Iran’s ailing economy and morphed into protests directly challenging the country’s theocracy. There have been no signs of protests for days in Tehran, where shopping and street life have returned to outward normality, though a week-old internet blackout continued. Authorities have not reported any unrest elsewhere in the country. The U.S.-based Human Rights Activists News Agency on Friday put the death toll, at 2,797. The number continues to rise. Iran's exiled Crown Prince Reza Pahlavi urged the U.S. to make good on its pledge to intervene, calling Trump “a man of his word.” Ayatollah Ahmad Khatami's sermon, carried by I