Excellent point, one that bears repeating.
It should also be pointed out that while an improperly trained little dog is just an annoyance, an improperly trained large dog (of *any* breed) can be dangerous. People who own large dogs need to take their responsbility seriously.
And come to think of it, the same is true of people who raise children... A poorly raised child is far more likely to become an adult who is some sort of danger to themselves or others.