Nothing in American sports compares to some of the old-school soccer rivalries based off of politics or religion. Celtic-Rangers in Glasgow, Scotland (Catholics vs Protestants), Real Madrid-Barcelona (fascists vs separatists), Lazio-Roma in Rome (fascists vs working class), Newcastle-Sunderland in northern England (royalists vs parliamentarians), Sevilla-Real Betis in Spain (middle class vs working class), Galatasaray-Fenerbahce in Istanbul, Turkey (upper class vs working class), Panathinaikos vs Olympiacos in Athens, Greece (wealthy vs working class), etc