Confirmed speakers:

Roger Waters, rock musician, co-founder of Pink Floyd

Luiz Inácio Lula da Silva, former president of Brazil

Yanis Varoufakis, former finance minister of Greece, MeRA25

Rafael Correa, former president of Ecuador

M.I.A., musician and activist

Slavoj Žižek, philosopher

Pamela Anderson, actress and activist

Srećko Horvat, philosopher, co-founder of DiEM25

Alicia Castro, trade unionist and Argentine diplomat

John McDonnell, former Shadow Chancellor, Labour Party

Jennifer Robinson, human rights lawyer

Tariq Ali, public intellectual and member of Russell Tribunal

Angela Richter, artist and activist