Philipp Ruch discusses his book "Der Rückfall," analyzing the NSDAP's surprising rise to the second-strongest party in the 1930 German election. He critiques existing historical explanations, arguing that the Nazi victory remains largely unexplained and was driven by systemic hatred rather than economic crisis or charisma. Ruch uses this historical case as a warning for contemporary politics, particularly regarding the AfD, emphasizing how quickly democracy can collapse if anti-democratic forces gain traction.