Ali Goldsworthy explains why campaigns which succeed by polarising people can cause long-term harm, and suggests ways we might tackle the resulting damage.

Ali was a top digital campaigner, working with charities, campaigns and political parties to mobilise hundreds of thousands of people to take action on behalf of causes. But in this honest and introspective talk she reveals how her doubts about some of the techniques she was using eventually suggested a dramatic change of direction. Ali now heads up the Depolarization Project, seeking to create space for people to change their minds.

Presenter: Olly Mann