They are mentally ill.
And you know what? Even in a labor camp, they would STILL support those who put them there.
Solzhenitsyn saw it in the Gulags from people who Stalin put there...they KNEW it was Stalin who put them there, but still they cried real tears when he died.
Oh the true believers shouted Long Live Stalin as their last words before they were executed. They often felt their arrest conviction and sentence was all a big mistake and Stalin had nothing to do with it. Deluded to the very end.