What is true about the AIM occupation of Wounded Knee?

The article linked below is generally accurate, although still disputed about the AIM occupation of Wounded Knee.
It is the general nature of the US Government to hide and distort facts of these types of things; the press (news services) generally speaking are not 'free' in so much as they are owned by people who's fortune could be effected by true reporting of things.
So, take all such things with a grain of salt (question as to the motivation of the source).