Actually, it's crystal clear, I think. I don't know if this has been already mentioned, but Roger himself pointed out in an interview that if you listen, at the end of "In The Flesh" you can hear people screaming "hammer, hammer" from the right channel and "Pink Floyd, Pink Floyd" from the left one! This symbolizes, according to Roger, the audience of Pink Floyd's show turning into a crowd of fascists.

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"Don't you know there ain't no devil, it's just god when he's drunk." Tom Waits