Wasn't it the one who goes by the name "Harvey" who went to Ivor Dembina's performance in order to disrupt it? How is he any different from the twats who disrupted the IPO proms concert?
And going back to the lovely 70s, I distinctly remember people going to disrupt the Bolshoi ballet and the Red Army choir in the name of "Let My People Go" - and we called them heroes. How standards have changed. What lovely double standards some have.