"Europe has for centuries been a place where cultures, religions and ethnicities mixed. This led on the one hand to progress and cultural enrichment, but on the other, to the most bloody conflicts. Nowadays, this diversity has increased: migrations are a common phenomenon on all levels: local, national, regional and global. With the end of the colonial era, a large number of former citizens claimed the right to settle down in the former metropolises. This was when the first major communities of non-Europeans began to appear on the continent. The economic situation after the second world war created an urgent need for workforce, and Western Europe eagerly invited people from Maghreb, Turkey, Middle East, and Asia to come and work in the coal mines, factories, and at construction sites to rebuild their cities and infrastructure demolished during the war."(...)