How ironic would that be?
By using "guilt-by-association" as the basis for convicting the guy, Germany as a society would be employing (and setting precedent for) a technique that the Nazis undoubtedly would have (did?) used themselves.
He was Russian, then German, then American...and now
Demjanjuk, who is now stateless, has nowhere to go.
To paraphrase Inigo Montoya, “When you say ‘guilt by association,’ I do not think it means what you think it means.” It’s NOT ‘guilt by association’ in any sense of that phrase, like JD was just a casual bud with some local jailhouse employees who just happened to work for a bunch of Germans...he was a GUARD, armed and ready to kill.
Working with Nazis, perhaps a Nazi himself. At Sobibor. Not a concentration camp. A death camp. One of six death camps. Specifically designed and operated to do one thing and one thing only...kill as many people as quickly and efficiently as possible. Designed to kill Jews, though others - gypsys, Slavs, homosexuals, etc. - were sometimes caught in the net and killed too. But only Jews were specifically and exclusively targeted, men women, children, for total annihilation, simply for being Jews. And JD was a cog in the murder machine.
So save your crocodile tears and guilt by association BS; no-one worked at Sobibor, or Auschwitz, Chelmno, Treblinka, Maidanek, or Belzec without knowing exactly what was going on, and making it possible to murder innocents by the trainload.