It should but it doesn't in liberal PC circles, it's just a matter of time till we no longer teach our youth about those "evil men", the founding fathers(a term which is currently being exorcized from textbooks).
It's moving that way already. Ask a public school third or fourth grader who Martin Luther King was, then ask them about Jackson, Lee, Davis (or Grant or McClellan, for that matter) - Guess which one out of the above that they can identify.
You may find some high school kids who are sufficiently well read to be able to identify all of them, but not many. I'm not saying that they should ignore black history, because it is important - but it is important in the overall context of American history. By the time they are in middle school, every American child should be able to identify all of the above (and Du Sable, DuBois, and Sojourner Truth, for that matter) - but unfortunately many kids are getting a revisionist history that fails to place historical figures, events, and beliefs in historical context, and ignores important aspects of American history, to focus on historical trivia.
My daughter's third grade social(ist) studies text is a good example: They spent months talking about interesting, but ultimately historically irrelevant tribes of hunter-gatherers, and limited time talking about the Revolution or the Civil War. Needless to say, the curriculum gets lots of home augmentation to provide a more balanced view.
I wonder how the PC cultists are going to get around explaining how these "evil men", the founding fathers, wrote the U.S. Constitution, the document which gives the PC cultists all of the freedoms and rights that they enjoy and that they wouldn't consider giving up for anything in the world.