According to Wikipedia:
"The white savior is a cinematic trope in which a white character rescues people of color from their plight.[1] Certain critics have observed this narrative in an array of genres of films in American cinema, wherein a white protagonist is portrayed as a messianic figure who often learns something about him or herself in the course of rescuing characters of color.[1][2]
The narrative trope of the white savior is one way the mass communications medium of cinema represents the sociology of race and ethnic relations, by presenting abstract concepts—such as morality—as innate characteristics, racial and cultural, of white people, rather than as characteristics innate to people of color.[3] The white savior usually is a man who is out of place within his own society, until he assumes the burden of racial leadership to rescue non-white foreigners and minorities from their plights. As such, white savior stories "are essentially grandiose, exhibitionistic, and narcissistic" fantasies of psychological compensation.[4]"
Late Night with Seth Meyers did an entire segment mocking these types of movies:
https://slate.com/culture/2019/02/seth-meyers-and-desus-and-mero-calling-out-white-savior-narrative.html
More Articles
White Savior as Extension of Colonialsim: www.teenvogue.com/story/hollywoods-white-savior-obsession-colonialism
Green Book as White Savior https://slate.com/culture/2019/02/green-book-best-picture-oscar-win-driving-miss-daisy.html