What qualification is necessary when teaching the line about oppressing or being oppressed?

Zuhayr ibn Abī Sulmā: Mortality, Generosity, Self-Respect and Wisdom of Speech (Verses 53–62)

• Treat oppression as a binding religious duty in every era
• Treat it as an observation of harsh tribal conditions, not a license for injustice
• It concerns only phonetics
• It has no social meaning