Latest violence has led to fears of sectarian violence in Iraq . Sunnis are feeling isolated by Shia - led government . Outside observers have accused Iraqi security forces of abusing their power . Historical Sunni ties to Syria adds to their feeling of isolation .
Latest violence has led to fears of sectarian war in Iraq . Sunnis are feeling marginalized by Shia-led government . Outside groups have accused Iraqi security forces of abusing their power . Historical Sunni ties to Syria adds to their feeling of oppression .