My answer to "what would you replace the pigs with?" is always "nothing, you don't replace cancer with another illness, you replace it with health".
Edit: On a related point, "how is society supposed to function without cops?" tells you exactly how empty and fascistic liberal ideology really is. "How is society supposed to function without murderous fascists running around murdering people with state imprimatur?" is not actually a hard question unless, at the base, you think murderous nazis are a good thing
