Not really. Estimates for the number of people in labor camps, labor colonies and prisons are all over the place, but based on their own fragmented records reached about 2 million by the end of 1938. That doesn't count pretrial/administrative detentions or the hundreds of thousands that were simply executed that year or all the people exiled to inhospitable settlements. And of course, the mortality rate in their penal system was extremely high.
> In the Southeast United States, incarceration rate of the Black population is 7%
Nowhere in the US is there anywhere close to incarcerating 7% of the black population.
That said, the US incarceration rate is ridiculously high and we should be ashamed of it.
That was certainly false if you look at the late 40s (not by much, only 2x or so though..)
However if you actually think (since you post nonsensical “statistics” that’s unlikely) about it the mortality rates in soviet concentration camps were massive, especially in the 1930s or during the war which significantly decreased the incarceration rate.
Can’t have a huge prison population if you just murder or starve everyone to death..