This comedy video will help. It's about 20 minutes long, by Boy Boy, featuring I Did A Thing and some dudes from The Chaser I guess.

How Much Money Can We Launder In A Day?

Basically, a dude was a whistleblower pointing out how casinos and slot machines are incredibly easily used for money laundering. In response, the casinos tried to utterly ruin his life, both via the legal system and by firebombing his house.