I personaly don't think the whole issue is around the word "genocide" but to admit that something wrong and brutal was done, at certain time in that country against certain people.
Talking about Nazis, if you look at German TVs, there is seldom one week without at least one program showing WWii and Nazis and .... quite unbiased.
Such a thing is missing by countries like Turkey. Another example of sacrificing humanity for the sake of national pride.

Admitting past mistakes is the best step toward avoiding happening of similar things in the future.