Yeah it's famous for the child abuse but it's mostly about a fading movie star
Mommie Dearest is famous for Joan Crawford played by Faye Dunaway beating her daughter Christina. That caused a lot of controversy when it came out. You can see the set up for why Crawford was abusive at the start as she’s played as a controlling and obsessive woman. The movie is actually about the second half of her career when she struggled with aging. That might also explain the abuse as in at least one scene she takes out her anger on her kid for declines in her movie parts. I would recommend this movie for two reasons. First, it shows the megalomania of a big movie star. Second, it shows that highlights that abuse isn’t just physical but psychological as well.
The movie title "None," available on Prime Video, has received an average rating of 4.7 from 5662 reviewers. 
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 {"Content advisory": ["Violence", "alcohol use", "smoking", "foul language", "sexual content"], "Audio languages": ["English"], "Subtitles": ["English [CC]"], "Directors": ["Frank Perry"], "Producers": ["Neil Machlis", "Frank Yablans"], "Starring": ["Faye Dunaway", "Diana Scarwid"], "Studio": ["Classics"]}

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