The Clash's London Calling is one of the most important albums in punk rock history, reimagining what punk was allowed to sound like and pushing the genre forward without losing any of its intensity or spirit. The title track is a scathing critique of contemporary British society, but more than that, it's an anthem for change, putting a voice to issues that have plagued society for generations, and it remains just as relevant today as it was in 1979. It's also a great demonstration of how much skill and craft goes into making an iconic punk song!