The white guy is always the hero, right? Well, that's what they want us to believe, anyway. There are a ton of movies in which the person you think is the protagonist, the one whose face is all over the posters and advertisements, the one who appears on all the talk shows and gets the most screen time, in fact serves a role other than that of protagonist. This mostly comes down to how the roles of characters are defined. When you get down to brass tacks, there are a lot of unlikely movie heroes out there.
You have your movies where the hero isn't really a hero at all, and movies in which the protagonist isn't the main character. There are even cases in which the purported villain of the movie is really more of a hero or protagonist than main character. But what does this all mean? You can define "protagonist" is various ways - the central character in drama, for instance. However, this is a bit vague. This list sticks to the definition employed by most commercial screenplays, in which the protagonist is the character with the most urgent dramatic want or the most pressing physical goal.
Here's how heroes and protagonists differ. A hero is a central character that displays admirable qualities and most often supports the emotional heft of a movie, giving action to the film's foundational themes. (Of course, sometimes a hero's most emotional moments end up on the cutting room floor.) As many films have shown over the years, it's not necessary for the hero to be the protagonist. Take, for instance, The Lion King. Simba's physical goal is to stay hidden with Pumba and Timon. Nala's is to save her society from starving. Who has the more pressing problem there? But Simba is most certainly the central character.
The point is, we don't always have to accept the white guy around whom a movie revolves is the protagonist. Here are some movies with supporting characters who were actually the hero, or those in which the protagonist isn't at all who you thought it was. BTW, don't be surprised how many of these characters are female.