I am really impressed with the knowledge of canine's in this thread.
I have four dogs (would have forty if I could).
Two are Jack Russells - everyone says to me "OH THEY ARE HYPER".
Just like Pit Bulls, I think until a person owns a dog - lives with it and loves it - they never ever really know the breed.
I have seen this video several places and people just have no idea how much little dogs can do as far as damage and biting - as much as large breeds. You don't often hear of a spaniel killing a human - true - but many other breeds are way worse for biting then pit bulls!