Anyone familiar with Tokyo knows quite well the understood influence of the yakuza in Japanese society. This past weekend, however, the Japanese government's organized crime exclusionary laws went into effect in order to discourage and limit (and eventually abolish) businesses from dealing with them completely. If you or your business pays them off in any way, you'll be treated like a criminal, too -- not to mention be publicly humiliated and potentially lose a lot of business (or even your job).
It's a bold move in a tough time for Japan, and it's a society that is generally a lot safer than the US or any European country, no question about it. So this will be a very intriguing case study for the implementation of such new laws that toss a lot of the traditional past in the trash.
And in case you're confused, the government has of course provided a cute illustrated guide that explains the new laws (minus those crazy tattoos though)!