This anarcho-punk band from late 70s London were an example of rebellious music aimed at England’s class politics at that time. I still see crusty kids dressed as punks wearing the Crass emblem and logo, hoping they understand the story behind the look. This song, Walls, is one of the few anarcho-punk disco tunes I’ve heard of. The Crass Records label put out the band, KUKL, which featured Bjork on vocals at age 15. Awesome.