No. For purely anthropological - human-evolutionary and especially human-historical - reasons, people are not able to do what you expect them to do. Whenever people have done that, there has been more injustice than before. Humans are not capable of embracing the whole humanity for anthropological reasons, but only those from their closer environment (family, kinship, maybe more, e.g. nation or cultural circle, but not humanity).
Communism also demanded what you demand and murdered 500 million people in the process. Great, isn’t it?