Mafia
Refers to the organized crime syndicate, especially the Sicilian Mafia, or by extension any similar criminal organization.
彼はマフィアのボスとして知られている。
He is known as a Mafia boss.
It seems he joined the mafia when he was young.
その映画はマフィアの抗争を描いている。
The movie depicts a Mafia conflict.
映画は二つのマフィアの抗争を描いている。
The movie depicts a conflict between two mafia families.
That politician is said to have been in league with the mafia.
Borrowed from Italian 'mafia', via English 'Mafia'.