Assertion: bin laden's al qaeda | /r/CapableOf | provoke shiite militias
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text: With attacks including the 2003 Imam Ali Mosque bombing, the 2004 Day of Ashura and Karbala and Najaf bombings, the 2006 first al-Askari Mosque bombing in Samarra, the deadly single-day series of bombings in which at least 215 people were killed in Baghdad's Shiite district of Sadr City, and the second al-Askari bombing in 2007, Al-Qaeda in Iraq provoked Shiite militias to unleash a wave of retaliatory attacks, resulting in death squad-style killings and further sectarian violence which escalated in 2006.