In that way they seem to reveal their own guilts. These characteristics are part of a deeper aspect of the guilty mind. To them, morality is not fixed and definite. It is mutable and indefinite, dependent primarily upon force. Related to the former characteristic, is the strong tendency of guilty men to seek and accede to authority figures.
Guards have power and are in authority.
Therefore, they are seldom challenged. There is no other way that 3 guards could effortlessly manage 300 convicts. Guilty prisoners attack one another, but not the authority figures. They believe and respect the authority figures such as guards over their peers. The guilty men tend to follow leaders or become parts of mobs, gangs or groups.