I'm not sure why people are so surprised when I tell them my grandfather survived Auschwitz. The guards usually lived.
WHAT!? You are claiming that your grandfather was a prison guard?
I am aware of the extent of horrors of the holocaust and the fact that half of the victims were Jews.
It is not cool to make jokes about the holocaust. If grandfather was really a prison guard then I guess that is interesting, however if you are just saying this to be funny then it is pretty insensitive. Hope you understand where i am coming from with this comment.
Oh ok so you think I'm lying.
You could be telling the truth, and there is probably a lot you could talk about while telling this story that people may find interesting. But you are presenting it as humorous when really its offensive and if you are going to share this past you should do it with the correct amount of sorrow and empathy towards the victims.