Iraqi police broke up a Sunni protest camp west of Baghdad Monday, leading to fighting that killed at least 10 people.
Authorities had said the camp near Ramadi was blocking a road and had to go.
More than 40 Sunni members of parliament resigned in protest.
Also Monday, three separate bombings in Baghdad killed at least seven people.
Violence between Iraq's Shi'ite-led government and the Sunni majority killed thousands during 2013 and has raised fears of a civil war in Iraq.
The Sunnis, who governed Iraq under Saddam Hussein, say the Shi'ites have marginalized them politically and ignore their needs.
Iraqi officials accuse the Sunnis of backing al-Qaida.