Operation Save Marley

I just signed this Change.org petition, and included this comment:

What is the point of having this dog euthanized?  Why is this system so mechanical that it can’t or won’t distinguish between a dog who’s a threat and a dog who unsurprisingly under the circumstances thought someone was being harmed and tried to protect him?  Seriously; what is the point of a system of that sort?

Anyone else care to add a protest to this kind of thing by signing the petition?

Please Help Marley

UPDATE: Sorry, but this is touching.  This overreaction is outrageous.  Added 7/21 at 6:51 p.m.