This is what the UN has to say about trying to "define away" genocide:
The Convention was manifestly adopted for humanitarian and civilizing purposes. Its objectives are to safeguard the very existence of certain human groups and to affirm and emphasize the most elementary principles of humanity and morality. In view of the rights involved, the legal obligations to refrain from genocide are recognized as erga omnes.
When the Convention was drafted, it was already envisaged that it would apply not only to then existing forms of genocide, but also "to any method that might be evolved in the future with a view to destroying the physical existence of a group".[22] As emphasized in the preamble to the Convention, genocide has marred all periods of history, and it is this very tragic recognition that gives the concept its historical evolutionary nature.
The Convention must be interpreted in good faith, in accordance with the ordinary meaning of its terms, in their context, and in the light of its object and purpose. Moreover, the text of the Convention should be interpreted in such a way that a reason and a meaning can be attributed to every word. No word or provision may be disregarded or treated as superfluous, unless this is absolutely necessary to give effect to the terms read as a whole.[23]
Genocide is a crime under international law regardless of "whether committed in time of peace or in time of war" (art. I). Thus, irrespective of the context in which it occurs (for example, peace time, internal strife, international armed conflict or whatever the general overall situation) genocide is a punishable international crime.
— UN Commission of Experts that examined violations of international humanitarian law committed in the territory of the former Yugoslavia.[24]
(Sources from Wiki entry on Genocide)
22.^ From a statement made by Mr. Morozov, representative of the Union of Soviet Socialist Republics, on 19 April 1948 during the debate in the Ad Hoc Committee on Genocide (E/AC.25/SR.12).
23.^ See Vienna Convention on the Law of Treaties, opened for signature on 23 May 1969, United Nations Treaty Series, vol. 1155, No. I-18232.
24.^ Mandate, structure and methods of work: Genocide I of the UN Commission of Experts to examine violations of international humanitarian law committed in the territory of the former Yugoslavia, created by Security Council resolution 780 (1992) of 6 October 1992.
-Polaris