I linked to the Wikipedia page as a starting point for those who do not know the song. It is not meant to be an endorsement of the explanation of the lyrics' meaning. Have a look at the edit history for that page, it is quite lively.

I think you are on to something though with respect to linking to Wikipedia, the time has probably come to stop linking to any potentially polarised/polarising page. I tend to link to Wikipedia out of habit and also laziness but it has lost whatever semblance of neutrality it had. Allmusic [1] has a page on the song but it it quite bland. Rolling Stone claims the song was originally called "Ice Age" and the lyrics are essentially a radio broadcast from a dystopian future that was easy to envision at that point in time [2] - which is the reason the current crop of panic porn reminds me of this track.

[1] https://www.allmusic.com/song/london-calling-mt0008645476

[2] https://www.rollingstone.com/feature/clash-london-calling-al...