ORIGINAL AIRDATE: April 29th, 1991 ---
MacGyver goes for a spirit walk while a power plant development threatens nearby "Indian" land.
MISSION: After Phoenix Foundation testifies against the Lakota tribe in court, MacGyver intends to make things write by proving a hundred-year-old land treaty actually protects their ancient holy grounds.
This week's highlights include:

Counting coup (History)

Counting coup refers to the winning of prestige against an enemy by the Plains Indians of North America. Warriors won prestige by acts of bravery in the face of the enemy, which could be recorded in various ways and retold as stories. Any blow struck against the enemy counted as a coup, but the most prestigious acts included touching an enemy warrior with the hand, bow, or coup stick and escaping unharmed. Touching the first enemy to die in battle or touching the enemy's defensive works also counted as coup. Counting coup could also involve stealing an enemy's weapons or horses tied up to his lodge in camp. Risk of injury or death was required to count coup.

Check out the article on wikipedia: https://en.wikipedia.org/wiki/Counting_coup.

Watch S4E20: "Trail of Tears" on CBS's website or check the alternative streamability of this episode here.