Priestley, co-founder of the Socialist Party, emphasized his political views in An Inspector Calls, highlighting the consequences of social inequality in Britain. He used Mr. Birling, a character characterized by selfishness, exploitative tendencies, and power lust, to represent the upper class's disapproval of lower-class individuals. Priestley aimed to encourage his audience to dislike Mr. Birling and reject his attitudes, aiming to lead a better life by rejecting his actions.