Hi from Paris,
Memory of Holocaust has evolved from 1945.
From an American* point of view and to reply directly to Larry and Jessica, I would highlight :

• "Holocaust", a TV program of 1978, which had been a first step to release memories and speeches in USA : it had really been an electroshock.
• 1991's fall of USSR : in communist's ideology, victims of nazis weren't specially Jews and didn't deserve a special memory treatment.

From 1991, all former Yiddishland became a open and free place of memory for Jews from everywhere, with a new start to history and commemoration.
Specially in places of our Losts' martyrdom.
We can observe a present setback in Poland with their law restraining historian researches but Truth always win at the end !

Blayb Gezunt !
Bernard Flam
Archives & history of Medem Center - Arbeter Ring in France

* In silence of survivors, we had approximately the same delay in France, but "Shoah", the 1985's masterpiece of Claude Lanzman, marked a starting point.