A Patch of Blue (1965)

Accidentally blinded by her prostitute mother Rose-Ann when she was 5, Selina D'Arcey spends the next 13 years confined in the tiny Los Angeles apartment that they share with "Ole Pa", Selina's grandfather. One afternoon at the local park, Selina meets Gordon Ralfe, a thoughtful young office worker whose kind-hearted treatment of her results in her falling in love with him, unaware that he is Black. They continue to meet in the park every afternoon and he teaches her how to get along in the city. But when cruel, domineering Rose-Ann learns of their relationship, she forbids her to have anything more to do with him because he is Black, but Selina continues to meet Gordon, despite Rose-Ann's furious determination to end the relationship for good.