“It began as Roman propaganda. The Picts were the descendants of the people who fought the Romans. They are the iconic enemies of Rome, so they appear in Roman texts as barbarians and that notion becomes fixed and is perpetuated in much later sources.” http://www.heraldscotland.com/news/15670151.Pict_on_by_the_Romans__our_ancient_ancestors_were_civilised_sophisticates_not_hairy_savages/