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On All Things Considered this week (Sunday 3 April at 9am and repeated on Thursday 7 April at 5.30am), Roy Jenkins and guests will be looking at protest.

The turmoil sweeping across North Africa and the Middle East was sparked by demonstrations against tyranny, and it has already cost many lives.

Nearer home, last weekend's massive march in London expressing indignation at government cuts to public services was the most recent in a line of protest, reaching back through student campaigns on tuition fees, objections to the Iraq war, rallies on the poll tax, and the big anti-nuclear marches of a generation ago. And we're assured there's more to come.

Just what does protest achieve? Is it merely an irritant, or what someone has called 'the engine of democracy'? And where, for people of faith in particular, should lines be drawn?

Roy Jenkins is joined from a London studio by veteran campaigner Bruce Kent former leader of CND and now Vice-President of Pax Christi, the international Catholic peace movement. And with Roy in Llandaff are Jeff Williams Director of Christian Aid in Wales, George Craig a former high ranking civil servant and Tamsin Graves a mother of three who has been taking part in protests since her teens, and has never really stopped.

All Things Considered is also .