The entire piece - and it;s one of many I've read across the political spectrum echoing similar thoughts - basically goes into how the BLM protests were a near miss for the kind of change that would put supremacists out of power.
They know they're weak.
They know they're corrupt.
They hope to keep riding this corruption until they die - isolating themselves as much as they can from the wreckage they leave in their wake, hoping the revolution doesn't come until they've become untouchable.