The arrest of Hong Kong Cardinal Joseph Zen; The history of black nuns; A Russian Quaker

Generations of black women and girls who took up the call to religious life in America found themselves subjected to racism, sexism and exclusion from within their own Roman Catholic communities. Edward Stourton explores this hidden history with Dr Shannon Dee Williams, from the University of Dayton in Ohio and author of ‘Subversive Habits: Black Catholic Nuns in the Long African American Freedom Struggle’ and Dr Patricia Grey, a former nun and the Founding President of the National Black Sisters Conference.

The war in Ukraine has prompted many countries to review their military strategies. But one religious group believes the way to bring peace is for individuals to build bridges. The Quakers in Britain are suggesting people contact individual Russians, emphasising our common humanity and shared values. They call it Citizen Diplomacy, and hundreds of Quakers have been using social media to reach people in Russia, or making cards to send. One Russian supporter of the Quakers, who now lives in the UK, has been reaching out to people in his homeland through his own initiative - a Russian language podcast called Human Rights in Russia. Sergei Nikitin talks of building bridges of peace through personal relationships.

Earlier this week an outspoken supporter of democracy and former leader of the Catholic Church in Hong Kong, Cardinal Zen, was arrested and then released on bail. Edward Stourton asks Lord Chris Patten, the last Governor of Hong Kong for his reaction to the news and his fears for the future of religious freedom in Hong Kong.

Producers: Jonathan Hallewell and Jill Collins Presenter: Edward Stourton