Young, Black And Conservative., Consider this idea: Tell those histories, but let the picture tell the skin tone, rather than an adjective. Tell the history regardless of month. My perspective on this has been formed over many years, which included the slogan "there is no black or white in the Army; only green"
An accomplishment is not more remarkable by adjective of skin tone, and there is often a suggestion that it is if the adjective is attached to it. If it is more remarkable because of that adjective, it implies that category is less capable of accomplishment.
Dr Carson, Dr Swain, Candace Owens, Frederick Douglass, George Washington Carver, and so many more are Great Americans, distinguished in their own fields You have added histories of other Great Americans many of us did not know. I avoid the adjective whenever possible because it implies the accomplishment is only remarkable within the category, while I hold it should be considered remarkable for the Nation.
When I look at Medal of Honor recipients, or Generals, or Great NCO's I have known, skin tone didn't make the difference. Their character and deeds did. The bar was higher than the civilian world, and they overcame it, in that military environment. Take a look at the stories of those who have earned the MoH, before the pictures. The standard of bravery and valor is the same. The adjective makes no difference and is left out. Only the picture makes that known. They are equals, though their deeds unique. (There is a difference between the Civil War and GWOT.)
Just consider that way of looking at it, and keep posting the stories of those Great Americans, even if the ones you seek out tend towards a particular group, and even if you choose to spotlight them every day; not just in one month, and even if you don't ignore them in a month or day dedicated to a different adjective.