The Killing of Kenneth Chamberlain (2020) on Netflix

Plot summary

Kenneth Chamberlain Sr. is an elderly Black veteran who lives with bipolar disorder in an apartment building. He sets off his medical alert pendant by accident early in the morning. Emergency services dispatch three police officers, who arrive at his door and say they have come to check on his welfare. Kenneth keeps the door shut and tells them the call was a mistake. The officers want visual contact and ask to come inside. He declines. Their suspicion that something illegal is going on grows, though nothing is. Kenneth is frightened that the police will hurt him. He mumbles to himself, and they read it as a second person in the apartment. One officer wants to leave him in peace, and his colleagues rebuke him. More officers are summoned.