I only mentioned this one because I had family there. But I suppose you are right about the gas. Their mass killing was not quite that sophisticated. I considered making note of that, and I should have. It was more “rounded up and put into camps, then shot, starved or frozen to death”. I would definitely call it an “organized campaign of ideological extermination”, where the dead ended up in mass graves. If it was just a civil war, they would not have rounded up and killed all the non-combatant “class enemies”.
We still have a blanket from one of those camps. The idea was, they made sure that there were always fewer blankets than prisoners. Without a blanket, you froze to death. Sometimes you died anyway, and there would be fights over the dead person’s blanket. It kept the prisoners in conflict with each other, I think.
