> Do you think it is somehow "anti-white" to point out ways in which white supremacy harms and oppresses non-white people when it is used at the level of state and federal governments?
It can be. Take your example for instance, where you said:
> "As for whether US itself is a white supremacist state, on one hand you could say that it has allocated a massive amount of resources in systematically rounding up black men (1 in 3 will be arrested in their lifetimes) without addressing the factors used to justify that, and many states systematically disenfranchise their vote."
You may not realize it, but this statement immediately dismisses the millions of non-black victims of the same thing. By making it all about one race, you have essentially set up a white (bad) vs black (good) dynamic where it doesn't actually exist. Instead of looking at fundamental issues affecting people regardless of race - namely, an authoritarian government that is primarily used by the privileged class against the unprivileged. For example: whereas Sasha & Malia Obama will never face the brunt of an authoritarian government, white Appalachian families know it all too well.
You saw the same thing with groups like BLM. If you never looked at the data you would assume this is an issue that only or primarily affects black people. And yet, the majority of people killed by cops are white males. And although per capita black males are more likely to suffer that fate, white males are also over-represented as victims of police violence based on their demographic cohort. (black, Hispanic and white males are over-represented; Asian males and females of all races including black, are under-represented.
Using the police violence issue, the largest over-represented demographic cohort is actually males which make up 95% of the victims. And yet it's not presented as a male problem. It's presented as a black problem despite the data that shows black females are far less likely to be hurt or killed in police interactions than white males are.
This happens a lot when trying to take a complex issue and assume it's based on race.