Had a dream about killing people, what does it mean?

So, usually I have dreams about being killed. I always have dreams about being killed when I am stressed. However, the other day I was the person killing people. Just wondering what this could mean.So here is my dream:

In the dream, I lived in a place where all my friends were, and we all slept in the same big room. Anyway, my mother (who I havent seen in years in real life) was shaming me because she had just found out that when I was young, I had killed someone. She showed me evidence that it was me who killed them, however, I had blocked this out of my memory and have no recollection.

Then the mafia had found this information, and a man visited me telling me to met him outside at night. Scared, I did so. He rode past on a bike and rang the bell, however I did not understand what this meant, was scared and went back home. He visited me again the next day and said if I didn't met him again that night and complete the initiation process then thy would kill me. At this point everyone was scared of me, worried that I was going to kill them. I assured them I wasn't going to. In the dream I was actually petrified. So I met with the mafia again, and figured that the man on the bicycle who rang the bell was actually meant to be a signal that the mafia had arrived and I was to walk up to them. The initiation process included me having to kill someone or I myself would be killed. I did it and felt so guilty. I also felt as though my life had changed forver.