In March 1848, during the uprising of the Paris Commune, Catherine Labouré was running the Reuilly hospital near Picpus street almost by herself, after most of the nuns had fled on account of the violence in the streets. She distributed Miraculous Medals all the way to the barricades.
When the insurgents conducted searches and raids, she tried to cheer up the people around her. Miraculously, all the sisters in her community were preserved from harm by the protection of the Virgin, whom she constantly invoked.
As the news reached Catherine that the insurgents had ransacked Notre-Dame-des-Victoires Church, she declared: "They laid their hands on Our Lady, they will not go any further." As she predicted, the rebellion died down that spring.