This chapter allows you to learn (1) why extreme speech cases benefit from cultural expertise and yet why it may be particularly challenging for experts to be involved in them, (2) what strategies can be employed by different stakeholders, including courts, the media and the experts themselves to mitigate the risks stemming from expert witnessing in extreme speech cases and (3) what socio-legal methods can help to analyse expert involvement in extreme speech cases. After reading this chapter you will have learnt to identify the challenges and mitigating strategies associated with expert witnessing in extreme speech cases.