It's worth noting, for your readers who don't follow links, that Robespierre precipitated a horrific revolutionary bloodbath known as the "Reign of Terror" and was, in short order, executed himself via the mechanisms he put in place (but not before ~17k other French citizens were summarily executed).

The link you gave explains the history. But the quote you chose does not really do justice to the horror unleashed by this particular style of revolutionary fervor (the one that decides slaughter is a swell way to achieve social good).

Also from your link: "A close examination of these two men [Robespierre and Saint-Just] reveals an astonishing, corrosive effect of political power. Nothing else can explain the remarkable change in their personalities. Before the Revolution, Robespierre was a mild-mannered opponent of the death penalty. With supreme power in his hands, he became one of the monsters...".

From Wikipedia: "On 30 March the two committees decided to arrest Danton and Desmoulins. On 31 March, Saint-Just publicly attacked both. In the Convention, criticism was voiced against the arrests, which Robespierre silenced with "whoever trembles at this moment is guilty."" [The Desmoulins were Robespierre's friends in his youth. They were executed.]

If Mangione is a harbinger of a new Reign of Terror, we'd best listen and walk the other way.