Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Senior Opposition Leader Criticizes Government Crackdown on Protests in Iran VOA News 28 December 2009 Iranian opposition protestor Photo: AP This photo, taken by an individual not employed by the Associated Press and obtained by the AP outside Iran shows an Iranian protestor holding a green cloth, the symbolic color of Iranian opposition, as he flashes the victory sign, during anti-government protest in Tehran, Iran, 27 Dec 2009 A senior Iranian opposition leader has criticized a government crackdown on nationwide opposition protests that killed at least eight people Sunday. Reformist Iranian cleric Mahdi Karroubi issued a statement Monday asking how Iran's clerical establishment could order the killing of its own people on the holy day of Ashura. Iran's state-run Press TV says eight people were killed Sunday in anti-government protests that coincided with the climax of Ashura, a solemn Shi'ite festival. It gave no further details. Some sources say the death toll was higher. Opposition groups say police shot dead four protesters in Tehran and killed another four in the northwestern city of Tabriz. They also reported clashes in other major cities as tens of thousands of opposition activists rallied in defiance of government warnings not to use Ashura as an excuse to hold protests. Sunday's unrest was the worst in Iran for half a year. Opposition Web sites say Iranian authorities also detained prominent opposition activist Ebrahim Yazdi at his home Monday. Yazdi served as Iranian foreign minister in the first government to take power after Iran's 1979 Islamic Revolution. There was no independent confirmation of the arrest or the violence. Iran's government has barred foreign media from covering the protests. The Web site of Iran's opposition leader Mir Hossein Mousavi says his nephew Ali Mousavi was shot during Sunday's protests in Tehran and later died at a hospital. It says Mr. Mousavi and other family members rushed to the hospital after the shooting. Witnesses say Iranian protesters fought back against security forces Sunday in several locations, throwing stones, beating up policemen and setting their vehicles on fire. U.S. National Security Council Spokesman Mike Hammer said the White House strongly condemns what it calls "the violent and unjust suppression" of Iranian civilians. The French Foreign Ministry issued a statement condemning Iran's crackdown on what it described as "simple protesters." It urged the Iranian government to find a political solution to the unrest. The violence was the most serious in Iran since the weeks after a disputed presidential election in June. Iranian reformists accuse conservative President Ahmadinejad of rigging the election to win a second term, a charge the government denies. Some information for this report was provided by AP, AFP and Reuters. .