Dream of being member of the mafia suggests youre allowing other people to manipulate you. On the other hand, it indicates youre using your power against others. Dream of having contact with the mafia means youre dealing with some conflict or agitation in a wrong way.
Dream dictionary: Mafia dream meanings
If you are one of the mafias participants, then such dream shows the huge influence other people have on you. Perhaps you dont have your own opinion, or simply dont express it to others. The dream could also indicate your higher status, which you are using in bad manners. If you faced the mafia or have troubles with it, then such dream shows the disputes that are happening between your emotions and feelings.