Protesters shout anti-U.S. slogans , chant religious songs . The crowd is chanting " Death to America! Al-Sadr aide calls on Iraqi 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 .