One of the consequences of Heidegger's active participation in the National Socialist revolution is that the year 1933 functions as a kind of prism, separating Heideggerians and Heidegger's detractors into different groups. At the same time, the different views and critiques provide light on Heidegger's thought on revolution. The conundrum that Heidegger was both a Nazi and possibly the most influential philosopher of the 20th century forms a kind of entry-level exam for all wannabe revolutionary philosophers.