What does my horrible dream mean?

last night i had the worst dream i have ever had in my life. There was a crowd of people and one of those police horses with a cop on it in the middle of the crowd and the people spooked the horse and it started to freak out and so did the people and one of them bumped into this lady that was just standing there in between 2 tables looking kind of scared and she fell and hit her head on one of the tables and bounced back and hit her head again on the other table and she hit some kind of nerve in her brain that made her body start flailing around and as she fell to the ground she was flailing back and forth and kept hitting her head on the tables and on the legs of the tables and finally she hit the ground and she just kept convulsing on the ground and it was like she was already dead but still thrashing about and she sort of lunged at this guy and instead of moving or anything he just shot her in the head and her brains went everywhere all over the ground and the crowd of people around her started clapping and saying yay and as she was shot in the head her body literally froze into ice, her head detached and the guy that shot her grabbed her frozen head and said something like, ( i cant remember this part exactly), now we can be together forever goddess. then it cut to a scene i guess you could call it of the frozen body with the head laying on a table in the morgue and a small japanese or Asian girl came and stroked the face of the frozen lady. when i woke up i was terrified and i started crying. can anyone tell me what this dream means?