I saw this thread Gambling in Pop Culture and I remember one movie in particular, starring John Malcovich and Matt Damon. And it makes me wonder about those underground gambling rings. And also when I was growing up watching movies locally, there will always this plot twist that there is a illegal gambling den and it will be raided by the hero of the movie and then those running it says it is being protected by high officials of the government.

And so have you heard of it like in your country?

I also dig one story about it here:

https://archives.fbi.gov/archives/newyork/press-releases/2013/defendants-plead-guilty-in-manhattan-federal-court-to-participating-in-racketeering-conspiracy-with-russian-american-organized-crime-enterprise-operating-international-sportsbook-and-to-participating-in-a-gambling-ring

Or have you played in this kind of underground gambling den before?