After the Nazis took power in Germany, Husserl, who was Jewish, was not only barred from publishing, but he also lived to see his own student Heidegger join the Nazi Party. In response, he insisted that it was more important than ever to rethink philosophy as a whole and worked at a frenetic pace at something like a history of philosophy, holding lectures in Vienna and Prague. In my view, he appeared to believe that fundamental errors of thinking were the root cause of much greater errors like the rise of fascism. But yeah, he probably didn't really care about politics.