Car bombers detonated four bombs in two outdoor markets in Shi'ite areas of Iraq today, killing 36 people and wounding nearly 100 others.
The bombings targeted a pet market in Baghdad's Kazimyah neighbourhood and a vegetable market in the Shi'ite town of Shomali.
Meanwhile, tens of thousands of protesters rallied in Iraq's five biggest cities against Prime Minister Nouri al-Maliki, accusing his Shi'ite sect of monopolising power and discriminating against Sunnis.
In Samarra cleric Sheik Mohammed Jumaa sent a warning to the prime minister.
"Stop tyranny and oppression," he said.
"We want our rights. You will witness what other tyrants have witnessed before you."
In the cities of Fallujah and Ramadi, demonstrators blocked the main road to Jordan, performing Friday prayers as part of the protests.
Other rallies were held in Mosul and Tikrit. Protesters have staged weekly anti-government marches in Iraq since mid-December.