So one example (which is fairly recent) is the split between rugby union and Rugby league (two codes of rugby, playing by slightly different rules). Rugby was

So one example (which is fairly recent) is the split between rugby union and Rugby league (two codes of rugby, playing by slightly different rules). Rugby was initially played at the "public" schools (which are in fact private) in the UK, where supposedly rugby originated. As it became more popular clubs from working class cities started playing rugby as well. Because working class men (in contrast to the rich men at private schools) could not afford to spend time playing rugby instead of working, the clubs started paying their players. As these working class clubs started to become increasingly successful, the governing rugby body which was dominated by the private schools insisted that players are amateurs. The conflict escalated to the working class clubs splitting of to form a different code of rugby (rugby league). The classism behind the split is still causes animosity behind the different supporters in the UK (it is less so in e.g. NZ were rugby was never a rich kids sport). You can read more here https://www.newstatesman.com/culture/sport/2019/10/split-between-rugby-league-and-rugby-union-story-national-class-division https://www.newstatesman.com/culture/sport/2019/10/split-bet...