you must remember... in order to dream .. the mind needs to have seen these images before in order to recreate them in our dreams.. therefore a young child having violent bloody dreams.. means that child would have had to been exposed to those images , on tv or personally and then when dreaming they would imagine themselves or people they know in those situations.

basically what im saying is.. if as a child u were exposed, or allowed to what violent programs on tv.. or even the news.. . or ur family life was unfortunately a violent unhappy one.. you will more likely have disturbing dreams..
they dont necessarily mean there is something wrong with you, its just your mind processing what it has seen..or experienced in some way, shape or form...

therefore... monitor what ur kids watch on tv.. and they will have happy dreams..