About 2,000 people are demonstrating in the rally held in downtown Baghdad, some holding pictures of the Shiite Prime Minister, Nouri al-Maliki. They reject Sunni calls to abolish a tough anti-terrorism law and another law banning former members of the disbanded Baath party from holding government jobs.
Iraqi security forces have imposed tight security measures around the rally. All roads leading to it were blocked off.
Members of Iraq's Sunni minority have been holding large demonstration for the past three weeks to protest what they call discrimination by the Shiite-led government.