Also in response to the idiot, check out religous tolerance within the Ottoman empire and how the Sephardic Jews sought refge within our colonies/territories after the Spanish inquisition.
If countries want us to admit the genocide they should admit their own crimes, a few things spring to mind.
The French Genocide of the Algerians
Belgian Genocide against the Congolese
Russian Oppression vs The Chechens
Englands indirect effect on the Potato famine in Ireland