Thousands of Shi'ites protested against the U.S. presence in Iraq, heeding orders from anti-U.S. cleric Moqtada al-Sadr for a peaceful show of force on the first Friday of the Muslim holy month of Ramadan.

Crowds of people waved photos of the reclusive cleric, dancing and shouting, following Friday prayers in Sadr City, a Shi'ite stronghold in northeastern Baghdad.

Several men burned a red, white and blue flag as they pledged support for the reclusive Sadr.

In the southern holy city of Najaf, several hundred protesters turned out for a parallel protest. "No, no to occupation!" read one banner.

The cleric, who is believed to be holed up in the Iranian city of Qom, has asked the bulk of his followers to dedicate themselves to helping poor Shi'ites and countering western influence in Iraq. He also ordered Friday's protests.