Black contributions were often not included in the teachings of American history at one point in this country, hence the need for “Black History Month”. If public education continues to include the history of all of its contributors it becomes less and less necessary to highlight one particular month. I ( as in me) never implied that any one groups history was more important than another’s. I don’t see what is so hard to understand about that.
Once you start celebrating "black contributions," you have automatically tainted them as not being good enough to be considered "great contributions" on their own. It's like the Grammys having a "Christian music" category. Oh, so Christian music isn't good enough to ever win a Grammy on its own, huh?