Dream interpretation, please? I hit someone with a car.?

[Matthew]

I had an aweful dream. AT first it doesnt sound that bad, but it was horrible. I was driving on the highway and there was a group of little black girls that were in front of my walking (at the same pace as my car, it was weird that happens in dreams i guess) and it seemed normal enough to me at the time because it was a dream. Well, they started slowing down and kept on doing so until they stopped completely, and so did I. They all looked at me and they were little African American girls (don't know if that's significant) that were around the ages of 6-8 I would say. Well, they started to go again at a normal pace but they would stop in front of me and laugh at me when i braked really hard. They kept doing it, going and stopping, going and stopping and one time when a little girl in a purple hoodie stopped I couldn't stop my car and I ran her over with my car and felt her crunch underneath my wheels. It was sickening, I could see her head whip back when my car took her under and i could really FEEL the crunch of the little girl. I got out of the car in a panic to see if she was okay and the rest of the dream is just me screaming over her dead body. there was no blood or gore or anything. Can anyone tell me what this could mean if anything?