Protesters in Iraq are jeering Saudi Arabia's king as a slave of America and Israel for sending troops into Bahrain.
A Saudi-led force entered Bahrain earlier this week to support the nation's Sunni monarchy. More than a month of protests by majority Shiites are seeking to break the dynasty's grip on power.
On Saturday, 2,000 Iraqis in the capital carried Bahraini flags and chanted "Yes, yes to Bahrain!" in Baghdad's Shiite Sadr City area. Some 4,000 gathered in the second-largest city, Basra, and carried an effigy of Saudi King Abdullah through the crowd.
Iraqi leaders fear the clashes in Bahrain could fuel sectarian violence across the Mideast.