Emily's Cat
Rarely prone to hissy-fits
I'm not sure the issue ought to be the function of windows so much as the rights of property owners. If it's my window and I want to break it, no problem. If it's your window and you don't want it broken but I do so anyway because someone I don't like is speaking at a third venue, then there's an issue.
So, let's not talk about what windows are for. Let's talk about the rights of property owners.
You're preaching to the choir. But in this case, we're dealing with someone who rejects the entire concept of property rights as a "belief" system. I don't think that will get us anywhere except to a headache.
There's always more than one way to skin a cat. Let's try a different approach and see if we can find common ground from which to discuss.