That “racism” and “xenophobia” is what used to be understood (properly) as “survival instinct.” They’re going to relearn all the old lessons the hard way.
By that time, enormous damage will have been done. Imagine how much suffering could have been spared if they have not done this for so long.
Mindless utopianism destroys the world. This is not confined to the left. There are utopians on our side, too. Civilization is usually set for the course of decline due to neglect, complacency, and corruption. We are finding out that it could also go down due to deliberate pre-meditated actions against itself from inside, accelerating the decline.