I normally really, really don't like anything violent. I stay far away from violent movies. So it shocks me sometimes that if I'm upset I will have a dream that involves things like knife-wielding assailants and that I'm petrified they're going to slash me. I won't even see a movie like this, so to have it happening to me in a dream is very shocking.
It doesn't seem like these happen when I'm really "upset" either. I don't really have 'fights' going on in my life - my boyfriend and I manage to discuss things and find great solutions. But I would guess that these dreams happen when I'm really worried about something and I'm refusing to think about it. I'm not sure ...