Fr Patrick Desbois has been travelling the Ukrainain countryside to hear and record the testimonies of witnesses to some of nearly a million and a half murders of Ukrainian Jews by the Nazis. Most were shot or buried alive. Fr Desbois has helped to locate many mass graves.
The Memorial of the Shoah exhibits some of these testimonies. Mykola Kristitch was six years old when he saw a mass execution in 1941. Perhaps it's my imagination, but I hear something of a six-year-old's voice as he speaks, as if part of him had been so seared by the experience that he never changed.
I'll stretch my central Europe category to include this. Link via T19.