“Hear us, my lord; you are a prince of God among us. Bury your dead in the choicest of our tombs. None of us will withhold from you his tomb to hinder you from burying your dead.”
Genesis 23:6

The Hittites' offer to let Abraham use their own tombs to bury Sarah was a veiled attempt to assimilate him and his clan into their nation. Genocide comes in different forms: murder, displacement, assimilation... Sometimes it even comes with a smile.