NDP MP Charlie Angus accused the Tory leader of “revisionist race-baiting.”
One grand chief called the resignation a "significant step backwards."
"I don't think we should be criticizing them just because they disagree with you, Judy."
The Tory leader railed on the Liberals' record.
"You need to be an example. You need to vote."
National chief says 'ultimate goal' would be to have Aboriginal languages printed beside English and French.
A photo of the new Assembly of First Nations chief was removed from the Conservative Party website this week amid complaints
Language is highly personal issue for this leader. He told us he didn't learn his own Cree tongue until university and that profoundly impacted his sense of identity. Knowing their own language, he argues, is essential for First Nations children because "studies have shown that when a child is fluent in their indigenous language, they're more successful in school and life."