>There are no barbarians at the gates, they have all been (mostly) civilized.
Given the resurgence of nationalism and right movements holding anti-immigration feelings in Europe right now, that's far from an universal opinion. According to these guys, our gates are wide open and the barbarians are breeding in our backyards. Barbarians being, of course, undesirable immigrants from poor third-world countries, not cool white guys from across the pond.
Your tone makes it sound like you're dismissing some of the concerns that have given rise to these movements. Make no mistake: importing a large class of people with differing values to society at large will carry frictional costs. How you deal with those costs is much more serious than just calling people racists can solve.
Given the resurgence of nationalism and right movements holding anti-immigration feelings in Europe right now, that's far from an universal opinion. According to these guys, our gates are wide open and the barbarians are breeding in our backyards. Barbarians being, of course, undesirable immigrants from poor third-world countries, not cool white guys from across the pond.