Being dissatisfied with the Occupation of Iraq by the Multi-National Force, an insurgency arose from the summer of 2003 onwards. This insurgency was most intense in the Sunni provinces because the Sunni community felt marginalized by both the Coalition forces and the newly Shi'i-dominated government. Since many Sunnis viewed their demise from power as coherent with the Shi'i rise to power, this insurgency came to adopt a sectarian nature as well. Especially with the rise of Al-Qaeda in Iraq, attacks on Shi'i places and people became more common. Other prominent sectarian groups on the Sunni side were the Islamic Army in Iraq and the 1920 Revolution Brigades.