See the US section, the use of the term “public space” in this conversation is acceptable as the term “public” is used in opposition to privately owned and not public in the sense that it’s open to the public like a mall is.

.https://en.m.wikipedia.org/wiki/Public_space

The government cannot usually limit one’s speech beyond what is reasonable in a public space, which is considered to be a public forum (that is, screaming epithets at passers-by can be stopped; proselytizing one’s religion probably cannot).