Love Thy Neighbour (1972)

Season 1: Episode 6

Despite the fact that Eddie is a staunch socialist and Bill is a true blue Conservative, there are many subjects on which they both agree. For instance, they are both against discrimination. When Bill tells Eddie that he was once refused a drink in a pub because of his colour, Eddie's British sense of justice and fair play is outraged and he sets out to prove that the opposite must be the case, with rather painful results.