Cable news people call them “prison camps” or “Trump prison camps,” but look in any dictionary: prisons are where people convicted of crimes are held. As Merriam-Webster notes, a prison is:
“[A]n institution for confinement of persons convicted of serious crimes.”
But what do you call a place where people who’ve committed no criminal offense (immigration violations are civil, not criminal, infractions)? The fine dictionary people at Merriam-Webster note the proper term is “concentration camp”:
“[A] place where large numbers of people (such as prisoners of war, political prisoners, refugees, or the members of an ethnic or religious minority) are detained or confined under armed guard.”
I would extend this to say the Soviets contributed monumentally, after Operation Barbarossa started, to the eventual downfall of National Socialism in Germany…but I hesitate to say they saved Germany…based on what East Germany looked like following the war. USSR’s behavior prior to Operation Barbarossa was pretty despicable and highly enabling of Germany’s regional proliferation. But, the western democracies should have been much more open to early communications and treaties/pacts with USSR, so to some extent Stalin was just adapting to the geopolitical reality of his position on the continent.