Small wonder Carlson has the usual suspects after him. A "former" who could not cut it on the network, going to CNN of all places to talk about alleged falsehoods on the air.

As for the recent spate of "White Nationalism", the new buzzword because the racism card wore out, nearly 58% of the US population is "white" (non-hispanic), so any American nationalism is going to have a heavy 'white' cultural component. After all, the Founders were White Europeans.
That apparently hasn't deterred people from coming here, regardless of their skin color, for a better way of life.
If that buzzphrase is supposed to mean something else, then definitions need to be laid out, so white folks know when to be offended.