Yakuza, Gangster Organization
Noun
ぼうりょくだん
暴力団と関東連合の違いは何ですか？
What’s the difference between the Yakuza and Kanto Rengo?
A group that has power using violence? Sounds like a crime syndicate to me, probably the Yakuza or some other gangster organization .
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.