I would assume that the cathedral in Moscow is the centre for devout Orthodox Christian believers. A holy place revered by most Muscovites. At the time of the offence committed by Pussy a solemn service was in progress, and Pussy performed at the High Altar. It really was an awful thing to do.As for the Russian gentleman who wanted courts to award a hundred years of gay parades, he does seem to have been a mite provocative. Russians clearly dislike homosexual exhibitionism as much as most Englishmen,if not more. Only a well conditioned people would think the fervent desire of most people should be ignored and their embarrassment ridiculed.
But that's exactly what the liberal internationalists who run western societies do think. As Anatoly Karlin (who is no social conservative) has pointed out, Russia is on the defensive in an international cultural war. Having totally disregarded (and largely criminalised)the opinions of the majority on issues like gay marriage and immigration, the post-democratic western elites are now trying to bring Russia fully under the liberal globalist umbrella. http://darussophile.com/2012/08/08/its-a-culture-war-stupid/#more-8496
Actually, this particular cathedral was built in the nineties to replace the swimming pool that has been built in the thirties to replace the original cathedral, built after the 1812 war. A fascinating history but not the holy of holies.
What makes one cathedral or another the "holy of holies" and who gets to decide?
Apparently any old commenter on any old blog who thinks he knows a huge amount on Russia. Otherwise, it might have something with Russian history but I doubt if that appeals to those commenters.