Ann Arundel County, Maryland
An off-duty police officer brought his leashed German Shepherd to a dog park (off-leash). A Husky began playing with the dog. At some point, the officer felt the dogs were playing too rough and called for the Husky's owner (actually brother of owner) to grab the dog. As the man made his way towards the dog, the officer withdrew his weapon and shot the Husky, killing him.
Normally, charges are not laid against police officers, on or off duty. But national coverage and public pressure have resulted in charges being filed - one for animal cruelty and another for discharging a weapon in a public place (which carries a stiffer penalty than animal cruelty).