It's no easy task to condense centuries of systemic racism into a brief post, but you've done a fine job.

Two additions for further study: a discussion of White History should include (1) an investigation of how a number of the achievements of white people relied on the work of other racial / ethnic groups (e.g. country music), and (2) a depiction of the various myths by certain "White Historians" that perpetuate systemic racism. For example, the Dunning School of historiography, which supported numerous racialist goals of the Jim Crow era of Reconstruction. White History Month should include an expose of the lies by racist white historians.

Wikipedia article about the Dunning School: https://en.wikipedia.org/wiki/Dunning_School