I think there's a possibility that Uncle Buck's only prejudice was that immigrants blow more things up than non-immigrants. My interpretation was that he felt that Liv was insinuating that he said that "no christians ever dropped bombs" (which she wasn't!), not that that was actually what he thought. And was indignant at this (non-existant) suggestion:
Originally Posted by
Uncle Buck
by suggestion i meant that only certain groups bomb. atleast thats how i read it
That's just how I read it and please do correct me if I'm wrong Uncle Buck!