None of that justifies the wholesale forced removal of children from their families and cultures. 
And it must be pointed out that no policy has ever mandated similar actions for the children of non-FN families mired in poverty .. no white kids have ever been removed from their homes and placed in distant schools to be indoctrinated with different cultural and religious values just because their parents were poor.
If you don't see the difference here, you're no less ignorant than Senator Beyak.