Yeah, I've had a lot of really really fucked up dreams. To me, it seems like dreams like that come to me when I am really stressed out, and/or suppressing shit. When I say suppressing shit, I just mean emotions, thoughts, desires in general. This does not mean because you killed people with no remorse in dreams that you desire to kill people in waking life.

I suggest when you have dreams like that, just let it go, and don't worry about attributing any specific meaning to them, than just mental clutter. Sounds like you need to chill out in your waking life.