I do not believe white racism is "natural", nor that erasing it was Lombard's motivation. He was quoted in his conversations with police as saying that black children are easier to adopt. If anything, his actions affirm his racism.
My statement about Lombard’s possible personal belief system comes from looking over his Amazon reading list. That list has been pulled from Amazon. It was mostly homosexual hard core, with a significant minority of books about racism and black American identity. And also, iirc, some books for children. Depraved.