Anarchist author Colin Ward comments: "Squatting is the oldest mode of tenure in the world, and we are all descended from squatters. This is as true of the Queen the United Kingdom with her as it is of the 54 percent of householders in Britain who are owner-occupiers. They are all the ultimate recipients of stolen land, for to regard our planet as a commodity offends every conceivable principle of natural rights." Others have a different view; UK police official Sue Williams, for example, has stated that "Squatting is linked to anti-social behaviour and can cause a great deal of nuisance and distress to local residents. In some cases there may also be criminal activities involved." The public attitude toward squatting varies, depending on legal aspects, socioeconomic conditions, and the type of housing occupied by squatters. In particular, while squatting of municipal buildings may be treated leniently, squatting of private property can often lead to strongly negative reactions on the part of the general public and the authorities.