People have every right to complain.
Look at this picture
If you made any of them black, how many white people do you have left? 7.
Look at how many movies are predominately white compared to black/Asian/etc...You're still getting representation no matter what.
Not to mention that 99% of these comic characters are white because of the time they were created in. 99% of them are straight because of the time they were created in. Take 1 away and just like I said earlier you still have a million white characters to play with. Take away 1 black character and you have like 99 characters.
And let's not even get into how many movies have been whitewashed or have white actors play blackface, yellow face, etc..Maybe when we race bend the amount of characters that have been taken away from us in the first place....we can (not really) call it even.