Psychologically: It was the shining horror, and you have woken bathed in sweat? Either it have become independent 'day leftovers' because you see too many horror films or have generally a weakness for subjects of violence of which your psyche demands too much slowly and realises now about suitable dreams. Or you have a 'horror vision' - a very negative, terrified image of a certain subject (person, process etc.) in your life. The dream wants to point out to the fact that you edge not always out the dreaded matter - but, finally, look 'closer' and to themselves with it should put apart: Then will possibly turn out that there is no reason for your fears and a suitable nightmare.