The biggest heroes are by definition the worst enemies of something or someone else.
You know who actually are not heroes? Cops. Police are most times useless, better used as crossing guards. If you call the police they generally can't help you with much, and tell you that it's a civil matter and to get a lawyer. They are just their to scare the crap out of the middle class with speeding tickets, and the threat of jail if things get out of hand.
Police are a big reason why Americans don't stand up for themselves. A cop will tell you to shut your fucking mouth and possibly smash your teeth out with a flashlight if you stick up for your civil rights. Cops, and fear of prison keeps most of us in line, out of the way, not protesting, not sticking up for ourselves. Of course, some of us don't care. There are still protests, and things like Occupy Wall Street.