Possibly the least flame war worthy example is the French Revolution. While the popular image is of the great terror killing off nobles, the reality is that most of the killings in Paris were either politicians or unfortunate merchants who refused to sell their goods at state mandated prices (at a loss) and were denounced.
And that’s not even including the 160,000 mostly poor soldiers killed in the Vendée after peasants revolted against forced conscription, nor the extra 40,000 civilians killed in the brutal reprisals after the war was over.
And the kicker? Not only did France eventually get a different king, but most nobles were able re-buy their old estates, and the government even went deeper into debt to compensate various nobles for their confiscated land.