Seeing the world through property rights is so one-dimensional and devoid of any creative thought it makes me sad as well. Eventually this is the SV ethos - own, conquer, extract, no space for externalities like simple urban pleasures.
Libertarians are unable to conceptualize what 'art' even is. It doesn't bring in financial benefit, so what is it for? If it's not an advertising board with your company's logo on it, it's worthless wasted space.
Painting your art on someone else's private property is not.
Pushing your political agenda in public spaces is especially not cool. I just want to walk outside and enjoy the world, don't want your political agenda pushed on me.
