You walk into the Visitation for a 95 year old German Lady with your Polish/Czech/Roma husband and displayed next to the casket is a huge painting of the deceased's engagement photo, where her fiance is dressed in his Wehrmacht uniform...
The woman in question is OBiL's Grandmother. OBiL's parents, while being generally nice people are kind of tone deaf on the issue. They tried to give OBiL and OSiL a picture of some relative who was some sort of official in the Third Reich.
Mr. I's Grandmother on the other hand, was a prisoner in Auschwitz.
They needed OBiL to explain to them why it was not OK.