"The Defiant Ones" and "Edge of the City" are my favorites also as a teacher, "To Sir, With Love." "Raisin in the Sun", "In the Heat of the Night", and "Lilies of the Field" are some of his best.
Lillies of the field. Great movie, especially for a catholic boy like you. https://www.imdb.com/title/tt0057251/
Great groundbreaking actor.....RIP ....I remember first seeing him in To Sir With Love with Lulu......
He was also a civil rights activist at a time when it meant risking career. He said his aim was to portray Black men of education, accomplishment and refinement. Like they said in Hamilton, immigrants get the job done!