I really hate the whole, “animals don’t kill their own kind!!!,” argument.
Dolphins rape and murder each other and other animals. So do a lot of apes. They will have full on wars with rival clans. Male lions kill cubs if they aren’t their’s. That’s true of a lot of species. I’ve seen domestic cats do it too. Animals beyond ants and fights for females do kill and hurt each other with no thought other than to progress their own. Life is conflict.
And humans have had their golden ages, without conflict when under a similar banner. Most conflict in the nature of these riots is politically engineered against the people. Most conflict is produced by this mixing of races and nationalities. They have made America the perfect breeding ground for this under a broken, almost tribal, system of government.
You are right, there is conflict between humans, but the whole universe thrives on conflict. Just because we can give it a name, doesn’t make us lesser than animals, who can’t rationalize the things they do. Who can’t organize their societies into peace. Into a golden age.
When “opinions” and beliefs are so drastically separate, they require their own society and government of people. The enemy wants everyone to hold hands and love each other though... so you see how that’s worked out for us.