Cop (Homo vorsutus):
Somebody trying to do an honorable job under difficult circumstances, constant public scrutiny, and the resistance of her colleagues. Subject of much second-guessing, sometimes deservedly.
Pig (Homo vorsutus Americanus sus):
Someone who calls himself a cop; has an official badge and gun to prove it; abuses citizens he has sworn to protect and serve; betrays the public trust; dishonors all cops; and deserves not an ounce of respect. His protectors and defenders fare little better.
Domestic pig, (Sus domestica):
An amazingly intelligent four-legged animal who must bear an entirely undeserved burden: namely being namesake for the worst that law enforcement has to offer.
And tastes good.