They shout anti - U.S. rhetoric , chant religious songs . Thousands of supporters of President al - Sadr gather in historic buildings . Demonstrators burn an American flag at a rally in Baghdad , Iraq , on Thursday . Al - Sadr aide calls on Iraqi government to release all Sadrist prisoners .
They shout anti - U.S. rhetoric , chant religious songs . Thousands of supporters of President al - Sadr gather in historic buildings . Al - Sadr aide calls on Iraqi government to release all Sadrist prisoners .