I think we can all agree with Mr. Matt Miller that the British program of "forced adoption" of aborigine children was a really bad idea. The assumption that the adoptees would eventually assimilate into European society was shortsighted at best. As Matt also points out, parallels in history do exist and some of them are more recent than you might think.
I was listening to MPR one day and they had an extensive piece dealing with Korean orphans that were adopted by American families following the Korean War. A significant portion of these children were adopted by upper middle-class or even wealthy families in communities which probably included few other minorities. Many of these children faced an extreme identity crisis. They knew they were different, but had no knowledge of the culture from which they came. In some cases this led the adoptee to resent his or her adoptive parents and return to Korea as soon as they were able.
We can justify this by telling ourselves that the adoptee's life in America was better than what he/she could've expected in a Korean orphanage, but I bet the citizens of Colonial Australia used a similar excuse.
-Dylan