I remember a few years ago, the late Roy Bailey did a tour with the late Tony Benn.

It was an interesting combination and I shared a lot (but not all) of their views but suddenly thought what is the point of this as they are essentially preaching to the converted? If you were a Tory you probably wouldn't be going to the gig.

I like songs that highlight individual cases of injustice rather than a broad political sweep unless the latter have an interesting angle.