Sue Blackmore has an article up on Richard Dawkins’s website regarding a hundred or so students who deigned to walk away from a lecture on memes she was giving. She expected “people to listen and then argue and disagree if they wished to” as opposed to exercising their right not to be denigrated or insulted by walking away. Note that she wasn’t prevented from speaking, though she was accosted afterwards (which was entirely not-cool, please don’t misunderstand me as being in favour of post-lecture ambushes….).
Her article is an exercise in bullshit and spin. Here’s why: