May someone cordon of an area of a public place for his own use and not let others come within that area.
1- May one make a show performance etc. in a public place and only allow people who pay to come?
2- May one make a large gathering for some people in a public place and keep others out?
3- May one stake out a place for a large picnic in a public place, and claim that other people who come within that area are disturbing his rightful use of that area?
May someone rope of a part of a public waterway for boat or swimming races, (or for recreational swimming or boating), and keep others from entering the waters there?