Many people don't know because of the shame, their parents never told them they or their parents were collaborators. After the war many destroyed as much evidence of their crimes and kept everything to themselves. In the Netherlands the death penalty was brought back for just for these crimes after not having been carried out since 1850 (officially abolished in 1870).
There was a strong desire for revenge in the first years after the war. That meant anyone who did anything 'wrong' was not going to talk about it.
There was a strong desire for revenge in the first years after the war. That meant anyone who did anything 'wrong' was not going to talk about it.