Priestley uses the character of Mrs birling to criticise the inequalities of the class system in the Edwardian society. Sybil is viewed as negative and controlling. In the opening of act 1 we can see Sybil directing orders to each of the characters ‘now stop it you two’. Priestley purposefully does this to set up the inevitable conflict between her and the inspector as she later on in Act 3 describes the inspectors questioning as ‘peculiar and offensive’ she cannot see the wrong in what she has done as she is blinded by her capitalist beliefs.