Dog lovers need to parade peacefully around the police station day and night, carrying pictures of the dog.
Say nothing. Carry no arms. If a marcher would occasionally “bark”, that would make it more interesting.
That, and leave dog bisquits about the area around the entrance.
Also, I’d like to see a mailing campaign to the police station,
a Milk Bone in each envelope.
“Bisquits not Bullets”