FLUX OF PINK INDIANS / Strive to Survive Causing Least Suffering Possible (1983)
If you like CRASS, then it's almost certain you'll feel similarly about Hertfordshire's Flux of Pink Indians, because they belt out the same kind of British anarcho/punk that's sadly dead these days. It's pissed-off, anti-establishment, rousing and raw emotion in the language of music. That's all you really need to know.
The reissue, with a different cover, added an earlier E.P. 1981's Neu Smell.