Is there any song that anyone can think about in the American traditions that is equivalent to the Irish aisling?

In other words, is there a song that appears to be a love song, but is in fact a political song?

I can think of some songs - like Follow the Drinking Gourd, for instance - that appear to be religious but are coded instructions to slaves for escape to freedom.

But is there any love song that's a coded call for freedom in the same way?