Since December, tens of thousands of demonstrators have taken to the streets of predominately Sunni provinces -- including Anbar, Nineveh, Salaheddin and Diyala -- demanding that the Shiite-led government stop what they call second-class treatment of Iraq's Sunni community.
Such turnouts include protests at al-Atisam Square in Hawija.
Over the past few months, al Qaeda in Iraq has claimed responsibility for several attacks across the country that targeted Shiite areas and Iraqi security forces.
A number of attacks have targeted the Sunni community in different locations over the past week. The deadliest one was at a popular coffee shop in western Baghdad, which left at least 27 people dead and 51 others wounded.
Earlier Tuesday, another attack occurred. At least four people were killed and 13 others were wounded when two roadside bombs exploded, one after another, outside a Sunni mosque in southern Baghdad, police said. The incident occurred in the neighborhood of Dora while Sunni worshipers were leaving the mosque, police said.
There was some violence during Saturday's Iraqi provincial elections, but there weren't major incidents and the polling was considered a success by Iraq, the United States, and the United Nations.