Is it normal to think and dream about torturing and killing babies?

I've always had the desire to do this. I don't think about it often, though, but when I do, sometimes it consumes my mind for a while. The thought brings great pleasure to be able to bring great pain to a defenseless baby who can neither stop me nor tell anyone what I'm doing.

On a rare occasion I have a dream where there's a baby, and I'm trying to hurt it and make it feel pain, but I'm not able to. Something keeps holding me back and I wish it wasn't (in terms of my dreams that is).

I would never hurt or kill a baby in real life though. I'm not sick or anything. I can't help my thoughts and I think what defines a person is their actions, not their thoughts.

I would very much like whatever it is in the dream holding me back to stop. Perhaps what's holding me back in my dreams is the same thing holding me back in real life though, in which case it would be good if I don't dream it.