Kathleen Stock speaking on BBC's HARDtalk! Stephen Sackur speaks to philosopher and author Kathleen Stock whose views on the immutability of biological sex and the limitations of gender self-identity have made her a hate figure for some transgender activists and supporters. Why has debate about sex, gender and identity become a culture war battleground? #IStandWithKathleenStock #KathleenStock #BBC #HARDtalk #StephenSackur #BiologicalSex #Trans #Transgender #TransLobby #TransMob https://www.bbc.co.uk/sounds/play/w3ct1n6y