Then argue that political speech should not be protected from accusations of libel. Not that the Pope should have a super-special Pope Loophole in the ordinary law

Nope. I argue that political speech must be protected. I have never argued that the Pope should have a super-special Pope Loophole in the ordinary law, and I am not aware that anyone else does, so what the fuck are you inventing there?

And how do you make a practical distinction between "blasphemy" and "insulting the feelings of religious people?"

Blaspheme away, I don't care. I believe almighty God is well able to cope, and if you are not immediately struck down by a lightning, that's just because she is too bored by you to react.

But invading a church and the altar and screeching obscenities there ought to be punished. You can utter the same words elsewhere for all I care. I object to the behaviour ("performance" you know) in this place.