The conflict that occurred at wounded knee in 1890 can best be described as

The answer to this question is a massacre of Lakota Sioux by United States Cavalry.
This event was most commonly known as the wounded knee massacre. The military claimed that the massacre is caused by one member of the tribes refuse to lower down his guns when they arrive. But if that instance resulted in the massacre of the whole tribe, we can conclude that the story will most likely to be a lie.