I don't know what the worst part of this story is. There's the fact that a rat was able to crawl up inside a moving vehicle and bite the driver, who happened to be a police officer on his way to a crime scene. Naturally, you would think that would take the cake. But then there's also the vignette wherein the police officers are sent back to retrieve the rat so that the hospital can test it for diseases, and one of them has to "beat the rat to death with an umbrella."
I mean, I guess you gotta do what you gotta do in that kind of situation, but, yeesh.