There was a pretty famous course case in Canada on this point, on whether a mall could be useful as a public space. Court decided no, but a dissent lamented th

There was a pretty famous course case in Canada on this point, on whether a mall could be useful as a public space. Court decided no, but a dissent lamented that there were no public spaces in many instances. I just searched, and the US Supreme Court has gone back and forth on this issue. http://www.firstamendmentcenter.org/do-you-have-free-speech-in-a-shopping-mall http://www.firstamendmentcenter.org/do-you-have-free-speech-...