It absolutely would be wrong to blame the anti-war anti-GOP anti-neocon people who opposed the war vehemently and protested on the streets in opposition against that war. It would also be absolutely wrong to kill such anti-GOP people via indiscriminate bombing.
It's not an individual blame, but sometimes innocent suffers the decisions of the leader. Like I am not sympathetic to Russia at all regarding sanctions even though I know not all Russians support Putin's plan.
And American's absolutely do suffer from their President's actions(although not that much).