LORELAI: Germany. Is Dad’s firm insuring Nazis now?
EMILY: Your father doesn’t know any Nazis.
The National Socialist German Worker’s Party was a far-right political party active in Germany between 1923 and 1945, notorious for their belief in an “Aryan Master Race”, and the hideous consequences of that when they came to power.
They were abolished at the end of World War II, and there are strict laws in Germany about displaying Nazi symbols and using hate speech. Despite Lorelai’s (not very funny or clever) joke, there are far more Nazis in the United States, where laws exist to protect them, than in Germany.