Six teenage girls have been arrested after two separate incidents of anti-social behaviour “fuelled by online trends” in south-west London, the Met Police said.
About 100 officers were called to Clapham High Street on Tuesday where young people were reported to be attempting to access shops and a restaurant. They also lit fires and set off fireworks on Clapham Common.



I think they do a lot of thing, and this is one in particular, but mostly can be summarised as a large group of people with common goal and being extremely rowdy and harassing people.
I always feel like this is all governments trying to see what they can do to leverage social media for. These are all test runs that get studied and logged in a manual and every couple years a new one is tried