Fair enough, but you also have a responsibility to show your kids that racism against black and brown people is a major social force which causes a “a pervasive raising of the status of white people over black”, whereas racism against white people has essentially no traction as a social force, and therefore is pretty much a whole separate category of thing.
This is why people object to you describing both phenomena as “racism”. It implicitly conflates two situations which are so radically different that you have to distort your worldview to even begin to see them as comparable. You can stick with your definition of racism if you like, but be aware of what it unintentionally communicates, and take care to specifically dispel that message.
