"I'm curios if Foxwoods really needs to deliver anyone a beating? Are they not the world's largest/highest grossing casino?"
They do not NEED to do anything; but they SHOULD rein in their security goons.
It is not like violence is their policy.
All casinos recognize that they are a business dependent on public good will in order to thrive.
I have been trespassed at Foxwoods, and yes they use the State Police to aid and abet them in their harassment;
BUT our nation's Indian Reservations may avail themselves of services the state offers, Police included — via invitation.
It is locally well known that the media in Connecticut, including the Norwich
newspaper, is kept "out-of-the-loop" when it comes to suicides, violence, etc. at Foxwoods.
Note: since the mid 1980's, and at least until last year,
(but probably still there), on the public roads leading into / through
the Saint Regis Reservation are large signs that warn Federal and State
agents / police that they are not welcome there.