What pages can I find examples of poor parental role models?

Johnny's parents come to mind first for this:

His father was always beating him up, and his mother ignored him, except when she was hacked off at something, and then you could hear her yelling at him clear down at our house. (Page 11)

As we walked out into the hall, we saw Johnny's mother. I knew her. She was a little woman, with straight black hair and big black eyes like Johnny's. But that was as far as the resemblance went. Johnnycake's eyes were fearful and sensitive; hers were cheap and hard. (Page 104)