No, all I have is not anecdotes. But the anecdotes confirm everything else.
People fled and smuggled themselves out for a reason. You either fall in line and praise the rulers, or you might trip and fall out of a window.
Millions upon millions died under Stalin. And when he was on deaths door, there were hardly any doctors to treat him due to him having them killed, tortured, and/or arrested. Now that is poetic justice. Though it’s hardly any consolation for his victims.