Lyric discussion by aftrlaw 

*politics

My take:

(1) Not about gay marriage. "Even the rats know the trouble's gonna come," of course, refers to the saying about rats leaving a sinking ship. Rats on ships go about their business ignoring pretty much everything that doesn't directly affect them. When something does affect them enough to leave, things are really in bad shape, seriously threatening everyone, all around. Gay marriage just isn't an issue of that magnitude in the US, (except maybe in the eyes of the anti-gay fundies, which the singer clearly isn't): it doesn't affect most people.

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