<br/>Thousands of Iraqis, mostly supporters of cleric Moqtada Sadr, held a silent protest in central Baghdad today, a week after a rally demanding electoral reform turned violent.<br/><br/>They gathered on Tahrir Square where on February 11 the security forces used rubber-coated bullets and tear gas to repulse protesters trying to march on the fortified Green Zone that houses the country's key institutions.<br/><br/>With provincial polls set for September, the protesters want an overhaul of the electoral law and the electoral commission to be replaced, on the grounds that both currently favour dominant parties they accuse of corruption and nepotism. <br/>'''''<br/>