Judith Butler argues that gender is performative rather than innate. Gender is constituted through expressions rather than expressing a pre-existing identity. Butler seeks to disrupt the notion that sex determines gender or gender determines sexuality. Laura Mulvey's male gaze theory describes how women are objectified for the visual pleasure of men in film. Angela McRobbie discusses how the media influences gender roles and sexuality. Queer theory aims to disrupt social categories around sexuality. Stuart Hall argues that race is a social construct and racism is expressed through language and discourse. Dick Hebdige examines how youth subcultures express resistance but are often commercialized and co-opted by the mainstream.