Not so much "lies" as "a people having a genocide committed against them does not make them constitutionally incapable of ever committing one themselves in the future." For several reasons, including that it was different people (only 7% of Holocaust survivors are still alive) and that 'nation,' as a conceptual construct, still carries the same weaknesses that it did when a relatively few voices in Germany used that construct to rally the masses to commit atrocities against their own citizens (and the people in their temporarily-conquered territory) for being 'the wrong kind' of people.

"It's not wrong when we're doing it" is an old, old failing of human empathy and sense of justice.