The point you make about the 1970's is a good one I think--especially as you point out it was a time in which people were becoming more "relaxed," which from your reference to both fashion and strikes I take to mean not just that people were becoming more chill but that they were invested in relaxing and reshaping social norms. This actually reminds me of discussions/points you made a few weeks ago about Arthurian literature and its connection to imperialism. If Arthur is a symbol for traditional Britain, or indeed, traditional white, european social values and norms, than it seems rife for a little relaxed satirizing.