and during a set which included many of his songs about the Iraq war, he invited me to sing a song of mine entitled "Lullaby for the Night Before a War." As I was introducing it (and correcting myself from saying that "we" went to war to saying that Bush and his administration decided that our military would go), an older couple got up and left. I don't know if I offended them, but I figured that if I did, my friend's previous song about objecting to the bombings of children in Afghanistan must've offended them too, so why had they stayed and listened this long??
SharonA

Could it be that the couple who left didn't particularly agree with the point of view in the songs about Iraq, but were prepared to sit through one or two, but when it looked like turning into a whole night of them, they decided enough was enough.

I often find gigs with too many songs on the same theme rather wearisome, especially if it's unannounced. The only time it works for me is with very good acts indeed, and even then it's very hit and miss.