LOL Pitbullie.. Your Chi could not do as much damage as larger breeds. Sure, she could hurt someone, but I wouldn't exactly label her as having much potential to be 'dangerous'.
I think emotions do get the best of people in some situations. Personally I think I might have said the same thing if I thought someone had left their kid unattended with a dog. (Especially a large, powerful dog)
I feel sorry for the poor kid
.. Hopefully he won't grow up fearing dogs.