When I was younger, and in and out of the hospital a lot, I used to have some dreams that were fucking nuts. I think it had to do with the Prednisone (AI steroids) I was on for a long time. The drugs gave me pretty epic mood swings, and I would rage from time to time, but when I slept....
Whenever I dreamt on steroids, and even for about a year after I stopped taking them, my dreams where horrifically violent. Not just like, cutting a swath through hordes of faceless zombies, but very personal, in your face, brutal killing.
One of them I remember with the most clarity, I was fighting someone on a bridge for whatever reason, and I slammed him up against the side, like I was gonna try and throw him over, but he wouldn't go, so I grabbed his throat with one hand and pushed back, so he's bent backward over the wall along the side of the bridge, and with my other hand I'm just repeatedly plunging a knife into his chest. After I stabbed him a dozen times or so, I woke up, soaked in sweat.
Thank God for video games desensitizing me to violence, or I might have issues.