They maybe need some time as timeout cops in a kindergarten somewhere.
Whenever these jackbooted thugs blast the family pet that is only defending his family's property (because that's what dogs do), it is as if the bastards have killed a family member (because they have).
Now, speaking as a guy with two dogs, this is stupid. My dogs will alert alert us to strangers, but they fuss over them and don't attack. The exception would be if the thugs broke in and then they would defend their home — like their human residents would.
I don't know what would happen in a situation like this, but suing the cops would be just one worry. The bottom line is this LEO behavior has to be reigned-in. If it's not, I foresee more Ruby Ridge scenarios.