Will there really be no such thing as a police in an anarchist society

By police I mean those who's job is to enforce the law. After all, law enforcers are inherently well good. Unfortunately both the culture and financial motive corrupts said people. If there is such thing as law enforcers in an anarchist society please explain how that will work because it would be quite naive to think that the average citizen would go out of their way to enforce the law. Let alone thousands of them.