My understanding is that there are two reasons for the higher rate of COVID among minorities.
The first is that they are more likely to live in crowded conditions.
The second is that they are more likely to be working at a “front line” position like grocery store clerk, and so forth, where they are exposed to the general public.
They are less likely to have jobs where they can work from home.
Studies from countries in Africa that have COVID-19 outbreaks show lower death rates than among African Americans. The primary reason is probably the fact that their populations tend to be younger on average, so that more of the people infected with COVID-19 in Africa are young people who have less serious outcomes worldwide.
An additional reason is likely to be the percentage of people with health conditions like diabetes or obesity that are correlated with adverse outcomes of COVID-19 infections is higher among African Americans compared to residents of African nations.
It is very likely that the ethnic and racial disparities seen are really disparities based on health conditions that simply correlate with race or ethnic group, or even locality.
Trying to make political points based on the effects of a virus shows how far reaching the leftist viewpoint has gotten.