I understand what you're trying to say with respect to dirty hands, and not wilfully misunderstanding you.
But, wrong. There _was_ a moral high ground. It subsisted within the group of people you claim were duped. Those were and always will be the people who count, who hold the _normative_ values of a society. What they "feel" is American Values (more broadly "western ones").
The "establishment" you mention were the bad guys, and remain so. To the extent they spit on normative values then claims refuge in the necessity of dirty hands, they are unsoldierly and they play into the hands of the enemy who seeks to divide us and undermine our values. They may was well be KGB/FSB agents in our midst.