Out in the SF Bay Area, a mob of 50 teenagers recently rushed a BART train and robbed the passengers. Now, these kids are popping up around the place committing more crime. A huge organized group of teens committing coordinated crimes across the city? Sound familiar at all?
http://sanfrancisco.cbslocal.com/2017/05/01/second-teen-bart-takeover-robbery-suspect-in-custody/
I remember hearing story’s of this back in Japan. It was a shadow organization known as The Foot. They practiced the mysterious art of ninjutsu. They would strike hard, the. Disappear without a trace. Except when they “crashed into a crash ” (read the article) and got caught. That wasn’t very Foot-like.