Humans have always moved, since they first left Africa. There is no country which has a homogeneous population. We are all mixed, an amalgam of tribes and peoples. There is no country which has a truly indigenous population, outside , maybe, Africa. Even there, people have moved great distances at different times in history.
In recent times, Europeans migrated to the four corners of the world and established colonies. They were not the first to move in large numbers, driven by the desire for conquest, or hunger, or ideology, nor the last. All languages that are widespread in the world, English, Spanish, Turkish, Arabic, Chinese, Russian and others are the result of military and/or migratory expansion in the past. Such is the nature of human history.
Yet many countries that exist today, where inhabitants share a common history, common myths, some common values, common language(s), common political institutions, common social norms, and a certain sense of national solidarity, struggle to accept newcomers who are seeking a better life but may or may not want to integrate into the society that receives them.
Within this context what are the responsibilities of the various members of the human community in the face of the tremendous suffering and hardship faced by so many people who are caught in zones of war and conflict, or who simply want to better their living conditions? What are the responsibilities of the receiving countries, of the refugees?
This subject strays somewhat from language learning. Please feel free to comment in the language of your choice, preferably a language other than your own. Please with respect. Or just ignore this thread entirely.