When superheroes first appeared in comic books, many minority groups were heavily underrepresented. There was a criminally small percentage of Black women in comics. Black comic book characters just didn't really appear in DC or Marvel Comics until the 1970s when Blaxploitation films were at the peak of their popularity. Comics with Black girls slowly began to trickle out (usually as sidekicks serving brief tenures with established heroes). Over time, their importance increased and, eventually, we got the female African American comic books we desperately needed.
Over the years, we have gotten some amazing Black superheroes in both mainstream and independent comics. Though other minorities groups have also gained traction in comics over the years, many simply were too politically incorrect to be embraced and admired. There is still room for more inclusion of (actually cool) characters that represent the disabled and LGBTQ+ communities. Companies are recognizing these needs and are slowly working to fill these gaps.
And while we wait (somewhat) patiently for better representation and inclusion, it's also important to recognize the fierce Black heroines and women superheroes in the pages of our favorite comic books.