Director Jules Dassin reworks the Ireland-based tale "The Informer" (made into a film by John Ford in 1935 with Victor McLaglen in the lead role) into a black-militants vs whites tale following Martin Luther King Jr.'s assassination in the US. Actress Ruby Dee also contributed to the script and acted in this film. Interesting visual sequences post-informant's dark deed. Julian Mayfield is interesting as the informer and for his contribution to the script. Evidently his acting and writing careers are limited to two feature films. Question: why give the title "Uptight" to this film? Tense, yes; anger, yes; controlled, definitely not. A below-average work of Dassin.