...people who deal with the dregs of society on a day-in, day-out basis; dregs who would attack you as soon as look at you. Dregs who often try to hide in sheeps' clothing. Yet, are still expected to be courteous and professional to them.
...people who, when they meet a law-abiding citizen, cannot afford to assume anything about that person as experience has taught them that even the fellow who is the nicest guy in the world to your face could just be waiting for his chance to hurt you. Yet, are still expected to be courteous and professional to them.
...people who cannot let their profession be publicly known because so many, and not just the dregs of society, hate them so much. Carte blanche, and without giving any individual the separate consideration they deserve.
...people who are human just like you, and are subject to flaws that every other human is subject to.
...people who, knowing full well that most people don't like them, choose to do their job anyway. Because on the rare occasion that they can make someone's day, all the abuse, scorn, ridicule, insults, mistrust, stereotyping, and general vitriol directed their way is absolutely worth it.
Finally:
...not the villains that some would paint them as.