From Wikipedia

Brainy Barbarians

Barbarian is a term for an uncivilized person, often used pejoratively, either in a general reference to a member of a nation or ethnos, typically a tribal society as seen by an urban civilization either viewed as inferior, or admired as a noble savage. In idiomatic or figurative usage, a "barbarian" may also be an individual reference to a brutal, cruel, warlike, insensitive person.

The term originates in the ancient Greek civilization, meaning "anyone who is not Greek". Comparable notions are found in non-European civilizations.