Earlier quoted context omitted.
Hm. I am not sure if a lynchmob and more blood would have helped the transition. The main important thing to the people was, that the wall was down and Stasi (secret police) out of power. There has been prison time and the careers of anyone important connected to the Stasi ended.
It's a hard one. I can tell you something which doesn't work because the Americans have tried it twice so far. It won't work to say "Well, that was naughty, please don't do it again". That silliness is how you get Jim Crow, it's how you got Trump 2.0 In a civilized country I can believe jail time would be good enough, but the US still uses capital punishment, so seems to me that if you want to be taken seriously some…
I also don't like this but I wonder, if this is because the choice is between a) full punishment with less certainty of guilt now b) lenient or no punishment with high certainty of built later.
The ideal would be to hold those people until they can be tried and punished in an orderly fashion. And in principle all you need for this is enough food to keep them alive, though in such situations, even that might be a luxury.