Back in 1979, the lawless and only recently financially bankrupt city of New York spawned a group of vigilante do-gooders called the Guardian Angels.
The idea was that these trained young individuals would ride the city’s subway system looking out for any wrongdoing. Like anybody else, they could make a citizen’s arrest.
At the time, this got quite a bit of publicity in the UK media. Then somebody got the bright idea to bring it over to London. I can say from the outset, Londoners didn’t like the Guardian Angels one bit.
You’d be on the tube and these guys in their T-shirts and berets would be standing at the end of the carriage like an ominous presence. It was too weird and alien for Britain and mercifully the whole thing petered out.