Like it or not, we have to live with them, per besides those who want to turn parts of the world into glass, I hope no one here, as of now, that is not realistic.
Many of us were ruled by Kings, then, there was a horrible conflict between 1939 and 1945. What did Ann Frank say? Something like,
“In spite of everything I still believe that people are really good at heart. I simply can’t build up my hopes on a foundation consisting of confusion, misery, and death. I see the world gradually being turned into a wilderness, I hear the ever approaching thunder, which will destroy us too, I can feel the sufferings of millions and yet, if I look up into the heavens, I think that it will all come right, that this cruelty too will end, and that peace and tranquility will return again.
Turkish genocide against Armenians and others, there were the Arab vs. Israel wars for some time, there has been Palestinian terrorism for some time, there was the Bengali massacres and genocide back in the early '70s, plenty of other folks caused trouble too, the Japanese, Red China, Cambodia.
Who knows what can be done. Maybe something.