Oppression is simply one group of people imposing their will on another group for self gain. 

In all cases …..

People fight, and destroy,  when they have NOTHING, nothing to do –    they develop a competitive mindset, which is DESTRUCTIVE!
If they work together towards a common goal to “Help Each Other Succeed in their respective Quests”, they are not fighting - they develop a COLLABORATIVE  mindset, which is CONSTRUCTIVE!