United Nations

a) The term 'Genocide' was coined by a jurist named Raphael Lemkin in 1944 by combining the Greek word 'genos' (race) with the Latin word 'cide' (killing). Genocide as defined by the United Nations in 1948 means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnic, racial or religious group, including: (a) killing members of the group (b) causing serious bodily or mental harm to members of the group (c) deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part (d) imposing measures intended to prevent births within the group (e) forcibly transferring children of the group to another group.
They are trying to cover up their mistakes to make it look like it didn't even happen.

b) I think that this claim proves a good point. The way the Europeans treated the natives in the residential schools was genocide. They physically, mentally, and even sexually harassed the students. They wouldn't let them practice their native language and they had to stop all their cultural ways and convert to Christianity. The Europeans wouldn't let the students see their parents for 10 months out of the year, so the children had no good role models. Without these residential schools the native culture would be stronger and better today.