Here is an interesting article from the LA Times about a lawsuit against alleged "gang" activity at Disneyland. The lawsuit also targets Disney for not taking action to prevent this type of activity.
http://www.latimes.com/business/la-fi-disneyland-social-clubs-20180209-story.html
http://www.latimes.com/business/la-fi-disneyland-social-clubs-20180209-story.html