Is Zack Polanski too "online"?

For some time, Zack Polanski's tenure as Green Party leader had been largely characterised as a success.    But he's been having a turbulent time in recent weeks. He was accused of inciting violence with an Instagram post, failed to steal the Manchester mayoralty from Labour, and the party is becoming increasingly divided on the subject of defence of spending.   Anoosh Chakelian is joined by political correspondent Megan Kenyon to discuss.