If we ourselves are being murdered a part of our lives is completely out of balance and we are being destroyed by external circumstances.
2- To be angry enough to kill suggests that we arc still holding some kind of childhood anger, since it is quite natural for a child to wish somebody dead.
If we are trying to murder somebody else in a dream, we first need to understand what that person represents to us before recognising the violence of our own feelings.
3- Wilful destruction is the relevant symbol here. Spiritually we need to take a look at what is in our path.