The Yakuza have long been one of the biggest criminal organisations in the world. At the height of their power in the 1960s, the Japanese Yakuza had more than 180,000 members. This Japanese mafia was rich, much feared, and virtually untouchable. But now their numbers, money and power have dwindled. There are only 23,000 Yakuzas left today, and they are older and poorer.