“Historians have a word for Germans who joined the Nazi party, not because they hated Jews, but out of a hope for restored patriotism, or a sense of economic anxiety, or a hope to preserve their religious values, or dislike of their opponents, or raw political opportunism, or convenience, or ignorance, or greed. That word is "Nazi." Nobody cares about their motives anymore." - AR Moxon
I usually see this joke attributed to Germans, which makes a bit more sense, as research into reasons why people joined nazi party led to Great Man Theory being replaced by social history.