re: How much of Germany's immigration/foreign policies are strongly influenced by WW2?

I lived in W Germany over 40 years ago with US Army. Had a chance to talk at length with two German "millenials" recently. I asked them how the hell they could give their country away to muslims. They explained sheepishly that it was because of the racial policies of the Third Reich. I pointed out that they were not alive then, their parents were not alive, etc. They have been taught collective guilt.

They also mentioned low birth rate of native Germans.

Western Europe as we know it is gone. Britain may have a chance and the former Soviet states seem to understand what is happening.