Hear it on
Youtube.
The Desperate Bicycles were a DIY band in the UK at the end of the 70s*,
maybe known best for ending their first 7" with a few seconds of silence
and then the shout "it was easy, it was cheap-- GO AND DO IT".
Vocalist Danny Wigley starts this song with pretty standard political
lyrics (the man on the street saying "if you haven't done anything wrong,
you have nothing to worry about") but then matter-of-factly changes gears
to a survival guide for those being arrested. I find it uniquely
compelling how the same chorus can function as information (for a
listener who does imagine they could ever be arrested) and as polemical
narrative (for a listener who doesn't).
* They get called "the first DIY band" a lot, though I don't know how
you'd verify that.