Dream About Being Chased And Shooting

I was at home cleaning the kitchen. When strangers walked in my front door. They greeted me and started talking to me but then they got these terrifying looks on their faces. There was a knock at my door and when I went to open it there were people outside dressed in all black and with guns surrounding my house. I looked back towards my kitchen and their was a little girl clearly terrified and telling me to help her. I ran over to her and pick her up and I ran out the backdoor and threw her in the river and told her to get away as fast as she could. I ran around to the front of the house and pulled a gun out my pants and started shooting at the people with guns that surrounded my house. They chased me down the street shooting back at me but kept missing. Finally I killed them all but one and it was a lady. I raised my gun preparing to shoot her as she's shooting me but the bullets weren't harming me. So I shot her and killed her too