Books about people coming to terms with the complicated feelings they have about a parental figure who loved them but was an overall terrible person to others.

I can't remember from whom or where it was from but I vaguely recall anecdote or story about a child (perhaps the son/daughter of a dictator) who grew up in a loving household coming to realize that their parent was an absolutely terrible person when it came to everyone else. I'm not looking for that [...]