Sunnis were treated unequally and there were militias wreaking havoc among the sunnis.

Post proof. If you want to argue that sunni terrorists were just good boys acting in self defense against horrible treatment, you have a big burden of proof to show that isn't a load of obvious bullshit. Those poor sunni terrorists, just trying to protect sunnis against.... against? against what, exactly? oh, you can't say, because it didn't happen, because the truth is that sunni terrorism in Iraq isn't a reaction to persecution, but is instead aggression aimed at toppling majority rule through violence, because the sunni elites don't want to give up power.

There is tons of evidence of the opposite, though: https://en.wikipedia.org/wiki/Persecution_of_Shias_by_the_Islamic_State

You just want to exculpate the US for installing Maliki as it did...

Nope, I don't give a shit about anything but reality, and quite frankly I consider your attempted apologia for terrorists to be pretty disgusting.