I remember once watching a documentary which also featured mental asylums, particularly Bedlam in London. In the 17th and 18th century people would pay to visit them as entertainment to view,laugh at and mock the patients. Piccadilly gardens is the modern equivalent.
It's full of mentally challenged people, the homeless, drug addicts, gangs of unruly youths and criminals. This has attracted hordes of YouTubers, many who goad and film them for entertainment and to gain money from further voyeur's who view the results on YouTube.
The whole area and central Manchester in general needs totally cleaning up and made safe, so everyday people can visit it once more to shop in peace and for a pleasant day out. I remember as a kid in the sixties and early seventies when going to Manchester city center was considered a treat. Now it's hell on earth and people avoid it at all costs. If they have to pass through there they do so as quickly as possible. Sad what it's become.