The most important quote about poetry and politics that I know is from a different situationist, Guy Debord. He was locked in a debate with the French Surrealists, many of whom by the 40s and 50s were part of the French communist party apparatus. Many Surrealists eventually argued for instrumentalizing art for political ends. Debord countered, "I don't want to put poetry in the service of revolution. I want to put revolution in the service of poetry".