If there is any such thing as a "white history," it can only be understood as a relation with people of color in America. At the level of individual people, many white families in America (mine included) can only properly be understood by including (largely unacknowledged and unwritten) narratives of relations with blacks. No group "deserves" a "place"--that's segregated historiography; but the real story must be written and taught.
Historical themes and strands must be chosen. If a widely lauded and salient theme of America--what we are about and who we are--has been the historical development of freedom, liberty, democracy, empowering the common man, justice, and so on--how could you disinclude the narrative of black struggle for all these things? Is it not logical to make the case that this is one of the most important narratives in American (indeed world) history? This narrative can ONLY be written, not by segregating the story, but by including "black history" as integral to the American narrative.