In September 1984, the Brazilian theologian Leonardo Boff was summoned to Rome, facing accusations that his writing and teachings were "dangerous to the faith".

He is a leading proponent of liberation theology, which says the Church should push for social equality. Leonardo was called to appear before the Roman Catholic Church’s highest tribunal.

A year later, he was banned from writing, teaching or speaking publicly. Now in his late 80s and no longer a priest, he tells Mike Lanchin about that turbulent time.

A CTVC production for BBC World Service.

(Photo: Leonardo Boff preaching outside a church to followers of Liberation Theology. Credit: Bernard Bisson/Sygma/Getty Images)