Protests and demonstrations in Parliament Square, especially long term ones, are complicated by the legal ownership of the land.
Unlike the roads and pavements, which come under Westminster Council, the central grass in Parliament Square Gardens is owned by the Greater London Authority , under the control of the Mayor of London, the Conservative Boris Johnson.
The recent eviction of the self styled "Democracy Village" squatters encampment, resulted from a High Court case, brought by the GLA.
N.B. this is not the first time that the GLA has acted against encampments set up in Parliament Square Gardens, the previous Labour Mayor Of London Ken Livingstone, had contractors erect a fence around Parliament Square Gardens, from August to October 2007, in scenes reminiscent of the early days of the Berlin Wall.
The Judgment shows the complexities of the law, but neatly summarises some of the history of protests in Parliament Square.
This case involved several, separate, groups of people, who cannot be held responsible for each others actions.
At what point do the rights of one group of protestors start to impinge or on, or deny, the identical rights of other groups or individuals, who wish to use the same prime protest location in Parliament Square ?