They were met with peaceful but firm resistance, as Lakota (Sioux) Women and Children stood immobile on that Sacred Ground, preventing the gross, unspeakable insult of 7th Cavalry choppers to Land on the same ground where more than 300 Murder Victims lay Buried.
A Lakota Mother said, "I cannot believe they are doing this, have they (7th Cavalry) NO Respect for Our Dead?"
Evidently the 3 helicopters and brass in charge did not know their history, and what a unspeakable insult it was to the residents of Pine Ridge, Wounded Knee and the Lakota People; to have the ACTUAL Seventh Cavalry choppers attempt to land on this Sacred Ground.
The video doesn't quite match the description above. One helicopter landed, then took off. Two others flew by overhead. There's no indication why the copters performed as they did. No indication that women, children, or others were protesting or that the pilots noticed them.
Whether it happened exactly as described or not, it's an interesting bit of political theater. I'm reminded of James Cameron's comment about how the 19th century's Lakota would be disappointed with today's Lakota. They might be proud if this was the scene they saw.
For more on the subject, see Review of Wounded Knee and Remembering Wounded Knee's Victims.