Am I overreaching, or am I trying to warn the West against allowing resentment-based ideology to take hold?

Read about Soviet dekulakization, and ponder how that could've happened. It started with "this whole society, the shoulders of which I now stand upon, is wholly bad and corrupt, irreversably, nose-to-tail, and we must destroy it all (so that nobody else can gain the influence over society that I have achieved)."

When you believe that the only moral position is for "your side" to hold power, and to use it against the other side, you'll justify any atrocity.