I already know and agree with what you've said here. I would happily concede that both of our positions lack good evidence for a wide, systematic effect.

I can only share my experience which is proof that, at least in my tiny part of the world, these protests have worked. You're very welcome to have anecdotal evidence to the contrary, I was just sharing my own and I'm unsure why I'm getting logic'd for it. I think perhaps you're inferring a much larger claim from my words than I was trying to make.