Executed by Nazis, not by 'Germans'...
I don't buy into the practice of refering to all Germans, during WWII, as Nazis. Not all Germans were members of the Nazi political party but many of them carried out it's evil deeds. We never refer to the British, during the war, as The National Coalition Party. Whatever political party one belongs to one is still British, French, German etc.
The Germans who carried out this execution were most likely members of the Nazi Party but they were still Germans!