Kumi Naidoo is a seasoned activist and has held leadership positions at Greenpeace International and Amnesty International. 
In this impassioned conversation with his compatriot Paul van Zyl, Kumi lays out four things he believes activists could do better at in order to more effectively lead a green revolution. He also speaks about the representation of marginalised voices, how consumer spending power can force greener supply chains, and he suggests radically rethinking the economic systems that have caused so much environmental damage to date.