[endoblast]

I think you've got it the wrong way around. All ideology is wrong, incorrect and fails in contact with reality. The true purpose of ideology (or 'the system') is to provide its adherents with the excuse they need to act badly. It could be relatively mild attempts to increase social status through hypocrisy and virtue-signalling. Or it could be to commit murder, torture and so on.

As Aleksandr Solzhenitsyn put it:

Ideology—that is what gives evildoing its long-sought justification and gives the evildoer the necessary steadfastness and determination. That is the social theory which helps to make his acts seem good instead of bad in his own and others’ eyes, so that he won’t hear reproaches and curses but will receive praise and honors.

What obscures matters is that evil tends to operate in layers with each layer deceived by the layer above it in the hierarchy (or below it, if you prefer a lowerarchy). So at the bottom there is a multitude of relatively decent people who don't want to kill and really do believe in the system.