I remember the first time Fanboys go all bent out of shape when Samuel L. Jackson was cast as Nick Fury in the Iron Man movies and the eventual Avengers film. As much as people talk about racism not being a "major part of this country anymore", there certain was a lot of "Nick Fury is supposed to be white" comments going around. But is he? Does it matter?
Here's the thing, NO, it doesn't matter. Diversity is needed in comic books, film, television, and in real life. This is a diverse world. And frankly, "white washing" things is not realistic and it's an insult to the people who seem to be erased from these fictional worlds created in Hollywood and Entertainment. Imagine if it was the other way around. Being left out is something everyone can relate to.
Granted, there are some characters whose race has a lot to do with who they are and their story line, but for the characters who can go either way, what's the big deal? The big deal is that white people want their white characters to "stay white" and they keep saying "why not just create new characters?"
Do you think that hasn't been attempted? That there are no black artists & writers to create new characters and try to get them published? There have been attempts in both DC and, yes, Marvel and they were shot down. And this wasn't back when black characters weren't "allowed" in print, this was in the 70s & 80s. Don't get me started on Black Lightning...
"Well, how would black people feel if we made Luke Cage or Falcon white?" Well, why would they? Especially since over 85% of the comic universes are white. AND they have done that in film before! I'm sure Cleopatra doesn't look like Elizabeth Taylor. Moses doesn't look like Christian Bale. Plus, there's currently a protest of "Stonewall" because the black drag queens and transgender women were replaced by a predominately white cast. What's up with that?!
Look, creating a realistic "world" on print or in film & television has to reflect real people and real situations. It can't be one-sided, and you can't talk about changing someone's race to Black or Asian, but whites have done it a LOT previously and apparently STILL do it.
When it comes right down to it, people of color growing up wanted to see more characters that look like them. It makes you feel like you're a part of something, a part of a team, and a part of this world. X-men eventually did that and it was greatly appreciated, and the most popular series and movies.
This world is diverse. That's a reality, and a wonderful one at that. So if race isn't a factor in the character, you can change it, and it's no big deal. And it's not being "politically correct," it's being correct period.