  The tension seems to derive, in part, from the fact that Butler's aims to defend some forms of queer gender behavior in opposition to heterosexual gender behavior. In this model, transgressive gender performance is closely wedded to non-heterosexual sexuality (Prosser 1998, 31–32). In arguing that Xtravaganza is killed because of her gender subversion, Butler must understand this as breaking from demands of heterosexuality (Prosser 1998, 46). What is missing from such an account is recognition of trans oppression as a modality in some ways distinct from the heterosexism.