Love is the message
I'm not a good interviewee, so I answered that it's problematic to just see social messages in song lyrics. I tried to refer to classic views on how disco music brought people together in the dancefloor and helped loose the relations between people from different backgrounds. It was a way too theoretical answer to give, but there's some logic behind it: there's not that much of deeper meaning to be found on disco lyrics - there are some exceptions of course - but I firmly believe there's loads of meaning and massive amounts of talent in the musicianship behind disco cuts. Those musicians were from hardworking jazz backgrounds and had the possibility to pursuit a full-time musical career - made less and less possible today by file sharing -, so I doubt we will see as talented generation of music any time soon. Even if I love to dig the weirdest and dumbest disco - and people who go out to a club want to listen to those cuts to loosen up -, I still like to emphasize the musical aspects of the good disco. Next time you listen to a disco cut, go ahead and listen if every instrument takes turns in jamming it out on the beat - a bit like in jazz.
Here's a prime example and quite aptly named. Edited by the great Danny Krivit.
Man, I should get this record, it's not aging at all.