In the UK Walter Wolfgang was famously removed from a Labour Party Conference for daring to shout "Nonsense" during Jack Straw's speech. I always thought heckling was part of the political hustings. Not any longer. Three laws - Terrorism Act, Public Order Act and Harassment Act - can be used against hecklers. Delaney got a barbershop quartet to sing "Nonsense" during a Straw speech on democracy to circumnavigate the law.
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