So I want to speed run some philosophy by you all, based around conflict. This shouldn't be long but there is a [tl;dr] at the bottom just in case.
Basic premise: No inherent meaning in the world, we project socially constructed meaning on our perception of reality, yada yada. I don't think this is too radical to suggest here, but even if you don't believe that just bear with me for a bit.
The human condition operates in the realm of The Self and The Other.
The Self is the internal sense of perspective, identity, consciousness etc. These are of course very different things but I'm trying to make this short so this is uber simplified.
The Other is the material environment/world/universe of everything else perceived outside of the Self.
The Self categorizes The Other predominantly as either Objects for use, or Hazards of danger.
Object: clothes, tools, food, etc.
Hazard: storms, fire, cliffs, wild life etc.
There are of course many nuances and this list is rudimentary, I tried to base it around simple one-dimensional concepts but of course the descriptions should be more complex and are in real life, ex. guns probably fall somewhere in the middle. This also refers more to the perception of clothes, tools, storms etc., rather then the actual literal piece of clothing. This is an important concept for this next part.
While the Object and the Hazard are obviously important for survival, the issue comes when we contact other individuals. Due to not being able to percieve the internal "self" of another person, in some cases the mind perceives said person as either an object of use or hazard of danger.
Examples: WARNING These aren't intended to be political but may be taken that way. If you're sensitive to your politics maybe stay away.
Object: Slavery literally legally consider other peoples bodies as property. All forms of slavery count including: child slavery, sex slavery, debt slavery, race slavery etc. Another example of objectification is objectifying and stealing what doesn't belong to you: theft and colonialism.
Hazard: Also known as otherization these days, the mental creation of a hazard of other people can be seen in: implicit bias and the social construction of violent black people, xenophobia against foreign migrants, The Red Scare, labeling the Right"Nazi's" and the Left "Commies". One infamous historical example would be the hazardization of Jewish community in Nazi Germany.
Now this isn't to say that Object and Hazard is never justified, i.e. if a mugger jumps around the corner is it safe to consider them a Hazard? Probably, but there's also probably more nuance then that as well.
I'd argue that these two concepts lie somewhere at the root of conflict and violence as most wars are fought either to take something from someone else, or because they are consider a major threat. Yes I know this is a root cause claim but I'm just questioning the merit. There's also a lot more context but I don't want to overload anymore then I already have.
[tl;dr] The mind sometimes misunderstands other people's bodies outside of their own as either objects for use or hazards of danger creating conflict (ex. slavery or xenophobia).