Systemic racism is still a big problem in the US, but I disagree with your answer to the question of why the ringleaders haven't been arrested. They were all either FBI informants or closely tied to FBI informants.

So it is not "whiteness" per se, with the given that the levers of power in the US are almost all held by white hands (white male hands).

Jan 6 was those in power setting up a situation or at least actively ignoring a situation while monitoring it 24/7 so that they can justify taking away more civil rights after the unrest/riot.

[edit] typo