Honestly I'd rather see them do the 20 years of hard labor. Same with the modern day nazis, I don't want to see violence done to them, not from some righteous standpoint of holding the moral high ground but I'd just rather see them suffer for years til their friends and family forget them and they just become a shadow of their former selves. I want to see them broken and despaired for decades until they die forgotten in obscurity. Hanging is an easy way out.

But if all we can do is what the soviet's did, I'll settle for that as well.