I Don't know why you are upset by true and well recorded history?This is the sort of information school kids need to understand our past and how we became what we are in the present.
When knowledge of the massacre of Aboriginal people In the Australian colonies came in the wake of the evangelical revival and the anti-slavery movement of the 1820s and 1830s, these concerns began to influence colonial policy quite significantly.
These included the Idea of the Aboriginal Protector, whose role was to safeguard the property of the Aborigines and to enforce compensation should they wish to surrender their land.
But Aboriginal rights over land were to be respected only for land occupied by them in some special manner.
Indeed,this careful phrase summarises the convenient legal opinion under which Aboriginal land rights never were recognised and it is still the opinion with which land rights negotiations must deal today.
So it was that the much related to rights of Aborigines were ignored deliberately and completely and the Protectors were prevented from protecting and the dispossession of South Australian Aborigines proceeded unchecked in much the same way as did their dispossession elsewhere.
Given the violent confrontation between settlers and Aborigines in earlier-settled colonies such as Van Diemen's Land and Western Australia, it is not surprising that South Australia was finally no different at all.