My favorite Sidney Poitier movie is one of his lesser known ones.
Pressure Point unfolds when a young psychiatrist (Peter Falk, TV’s Columbo), exasperated by his failed attempts to help a black patient who hates whites asks to be reassigned. In a story told in flashback, his seasoned superior (Sidney Poitier, Guess Who’s Coming To Dinner) recounts his own experience during the war when he treated a Nazi youth (Bobby Darin, Too Late Blues) who hated blacks.
Don’t be put off by the rather lurid noir vibe of the trailer. It is a movie about gaslighting (and Nazis) and it is very relevant to today. The full movie is available (X 3) on YouTube to watch for free. There are three uploads. One is HD. One is in Spanish with English subtitles.