police mall chase: K-9 bites trooper

[sk8r101all]

here's the story
http://readingeagle.com/article.aspx?id=241762
A trooper was bit, and suspect charged for it.

If I was at the mall around a corner or in a store, come out to find this happening and the dog attacks me (innocent bystander), I draw my gun and shoot the dog, would I be charged?