Words and labels are tricky. I think people confuse American conservatism and liberalism with German conservatism and liberalism in the times of the Weimar Republic (welfare state). The Weimar Republic was mainly supported by the Social Democrats (liberal-left). Hitler was a German Nationalist (conservative-right). In the end, he crushed both. If you want to read more on this issue, read “The Coming of the Third Reich” by the historian Richard Evans.

QUOTE: “Yet the depth of hatred and resentment which Nazi stormtroopers felt against the Social Democrats (liberal) as well as the Communist can only be understood in terms of their feeling that they were under constant attack not just from Social Democrats’ paramilitary affiliate, the Reichsbanner, but also in many areas from the police, who in Prussia at least were controlled by Social Democrats ministers such as Carl Severing and Albert Grzesinki. [P222]