Protesters shout anti- BAGHDAD slogans , chant religious songs . One of supporters of Al-Sadr rally in historic square . Muqtada al-Sadr aide calls on Sadrist government to release all Sadrist detainees .
Protesters shout anti-U.S. slogans , chant religious songs . Thousands of supporters of Muqtada al-Sadr rally in historic square . Al-Sadr aide calls on Iraqi government to release all Sadrist detainees .