Ever wondered how and when has the concept of normality arisen? How things came to be the way they are?
Although the concepts of normal and weird, that of the average joe and the eccentric might have existed even in ancient years (I imagine some ancient greek philosopher looking too weird to the common person of his times, I think there are examples of strangeness and reactions to this in history), maybe the first time that it was applied in a political basis in our history is described in the 2nd episode of the documentary "the century of the self".
Anna Freud believed that if children strictly followed the rules of accepted social contract then as they grow up, the conscious mind will be greatly strengthen in the struggle to control the unconscious.
I leave you to discover more in the documentary video.