Public spaces in city centres are increasingly being turned into private estates, with their own security forces who get to decide who can be there and what they can do. Since their aim is primarily to create footfall for the retail outlets that provide a huge chunk of their income, they tend to be sanitised, sterile places weeding out any "undesirable" people and activities. In this video The Love Police challenge the private security at Canary Wharf in London, whose security guards wear uniforms that look a lot like the city's Metropolitan Police. You can read more about this issue here.
[watch video below]