Frederick Douglass presents several examples throughout his narrative of how slavery is not only injurious to slaves, but also to the slave owners themselves. The first example arises as he explains his own parentage. In his early years, he hardly saw his mother, a slave, because she was sent away to work; with his father, rumored to be the plantation owner, he had no relationship.
Here, then, is the first injury: slavery allowed and even financially encouraged slave owners to give in to their lust and sexually abuse their slaves, then take no parental responsibility, allowing their own children to become slaves:
"The fact remains, in all its glaring odiousness, that slaveholders have ordained, and by law established, that the children of slave women shall in all cases follow the condition of their mothers; and this is done too obviously to administer to their own lusts, and make a gratification of their wicked desires profitable as well as pleasurable" (21)
At the same time, such acts were injurious to the wives of the slave owners, who often were aware of their husbands' adulterous acts. Since they usually could not take out their hurt and anger on their husbands, they often directed it to the female slaves in question:
"Such slaves invariably suffer greater hardships, and have more to contend with, than others. They are, in the first place, a constant offense to their mistress" (21)
Slave is also injurious to slave owners and overseers by nurturing their worst character traits and most violent tendencies, as Douglass experiences with both Mr. Gore and Mr. Covey:
"Mr. Gore was ... artful, cruel, and obdurate. He was just the man for such a place, and it was just the place for such a man. It afforded scope for the full exercise of all his powers, and he seemed to be perfectly at home in it. He was one of those who could torture the slightest look, word, or gesture, on the part of the slave, into impudence, and would treat it accordingly" (37).
Later, Douglass reflects:
"(Gore's) savage barbarity was equalled only by the consummate coolness with which he committed the grossest and most savage deeds" (38).
When Douglass is sent to Baltimore, he meets his first truly kind white woman: Mrs. Auld. She begins to teach him to read, smiles at him, and looks directly into his face. Sadly, though, Douglass watches her character transform for the worse:
"But, alas! this kind heart had but a short time to remain such. The fatal poison of irresponsible power was already in her hands, and soon commenced its infernal work. That cheerful eye, under the influence of slavery, soon became red with rage; that voice, made all of sweet accord, changed to one of harsh and horrid discord; and that angelic face gave place to that of a demon" (47-48).
Ultimately, Douglas says:
"Slavery proved as injurious to her as it did to me. When I went there, she was a pious, warm, and tender-hearted woman.... Slavery soon proved its ability to divest her of these heavenly qualities" (51-52).
Finally, Douglass believes that slavery is corrupting to the religious faith of slave owners, for "the religion of the south is a mere covering for the most horrid crimes, - a justifier of the most appalling barbarity, - a sanctifier of the most hateful frauds, - and a dark shelter under which the darkest, foulest, grossest, and most infernal deeds of slaveholders find the strongest protection" (86).