I was just reading this article below about a kid that went berserk inside Roger Gracie's BJJ gym after his induction class. How many of you have had to deal with violent thugs in your academies and how did you diffuse the situation afterwards?
http://courtnewsuk.co.uk/judo-boy-went-berserk-after-his-tooth-was-knocked-out/
A teenager trashed a judo champion’s gym before spitting blood at police, a court heard. Junior Ogunsola, 19, was attending a formal induction at the Roger Gracie Academy in White City in west London when he lost his temper after his tooth was knocked out. Ogunsola smashed two windows then spat blood at three police officers who arrived to detain him on 12 March, Westminster Magistrates’ Court heard.
http://courtnewsuk.co.uk/judo-boy-went-berserk-after-his-tooth-was-knocked-out/