Yes, it’s apparent that there are vicious breeds. Any parent who willingly lets one of these animals near their child might as well give the kid a loaded pistol to play with. The parent is culpable and should go to prison.
I came to this same conclusion the other day when I saw a large car window sticker that showed a couple of cuddly pit bulls with the caption "Outlaw Stupid People". After thinking that the car owner should be careful what they wish for, I thought that the answer lay in somewhere in that lame sticker. Dogs should be treated as an extension of their masters. If your dog poops on the neighbors lawn then it's the same as if you personally pinched the growler (pun intended!). Likewise, if your dog kills a human then it's murder charges for you, buck-o.