Does anyone else wonder what we would have been tweeting/posting during WWII?

Every time I listen to a history podcast, I'm further affirmed in the feeling that people haven't changed much. And then I wonder what, if anything, could actually be done to coax greater kindness and courage from the world writ large. Is it possible for human beings to collaborate internationally with longterm success - or is our best bet rebuilding the global through improved local action? (Or are we just effed? 🙃)