In Politics Weekly we ask whether Britain is entering a new era of protest politics after environmentalists took to the roof of parliament and the Liberal Democrat leader Nick Clegg staged a walkout from the House of Commons.
We hear from the Guardian columnist George Monbiot who says it is sometimes right for protesters to break the law.
We also hear from the Guardian sketchwriter Simon Hoggart who describes that Lib Dem walkout.
Chris Huhne tells us that the anti-runway protesters were part of a British tradition of civil disobedience. He also criticises Michael Martin, the Commons speaker, for provoking the Lib Dem walkout by refusing to grant a vote on their call for an "in or out" referendum on Britain's EU membership.
We hear the Speaker defending himself in the Commons – after new disclosures about his expenses – and ask whether it is time for him to go. Polly thinks he should bow out gracefully after a decent interval.
Finally we turn our attention to Harriet Harman, Labour's deputy leader, after she described Fidel Castro as a hero of the left. Chris Huhne, Polly Toynbee and Tom Happold were all unimpressed by her remarks.
