If you dig far enough into any group’s history, you will find wars and conquest of one people over another. Of course, the victors write the history, but there are always those that have been Guardians to the whole truth.
In my humble opinion, the conflicts today are the same as when the first human bashed another in the head with a rock and took his stuff. Only the weapons, and the ways we communicate those actions have changed. A few have awakened and are trying to make true changes, but mostly it’s just talking heads.