We will eventually have to move back to the US of A after my assignment is over. I would like to solicit opinions on the best dogs to get for protection. (they would have to be good with elementary-aged kids)    How many would you suggest, and how loyal would the suggested breed be to the family, and how vicious would they be towards outsiders.    Also, is their any way to train dogs to be especially vicious towards negroids and dark hispanics?