Edward Louis James Bernays was an Austrian-American pioneer in the field of public relations and propaganda, referred to in his obituary as "the father of public relations". He combined the ideas of Gustave Le Bon and Wilfred Trotter on crowd psychology with the psychoanalytical ideas of his uncle, Sigmund Freud. He felt this manipulation was necessary in society, which he regarded as irrational and dangerous as a result of the "herd instinct" that Trotter had described. Wikipedia*
On the C-SPAN Networks:
Edward Bernays has one video in the C-SPAN Video Library; the first appearance was a 1989 Speech.