[Williams]

Oh he should have martyred himself. OK

[WILLIALAL]

These atrocities were occurring in predominately Catholic areas, Germany, Poland, Italy, France, etc. He was their leader whose idea is to uphold the beliefs of his Church and followers.
Yes, martyring himself would have been an option to focus attention to a problem he knew was occurring. I know the arguments that open opposition to the Nazi program would have endangered priests and nuns throughout the area, but you have to ask yourself what would St Peter or St Paul have done? It would not have been an unprecedented action.
Imagine the world wide outrage if anything had happened to the Pope.