Julia Gillard says she has no idea how Tony Abbott's decision to stand in front of 'ditch the witch' and 'Bob Brown's bitch' posters was not a career-ending moment for the then opposition leader, saying 'sexism is no better than racism'. In the final episode of ABC's The Killing Season, Gillard addresses in detail the campaign against the carbon tax. Former prime minister Kevin Rudd also responds to questions on leaking against Gillard and brands her an 'assassin' for moving against him