The Collaborative International Dictionary of English v.0.48:
Demagogy \Dem"a*gog`y\, n. [Cf. F. d['e]magogie, Gr. dhmagwgi`a leadership of the people.] Demagogism. Syn: demagoguery. [1913 Webster]WordNet (r) 3.0 (2006):
demagogy n 1: impassioned appeals to the prejudices and emotions of the populace [syn: demagoguery, demagogy]