DEMAGOGUE
demagogue, demagog, rabble-rouser
(noun) a political leader who seeks support by appealing to popular passions and prejudices
Source: WordNet® 3.1
Etymology
Noun
demagogue (plural demagogues)
(pejorative) A political orator or leader who gains favor by pandering to or exciting the passions and prejudices of the audience rather than by using rational argument.
(historical) A leader of the people.
Verb
demagogue (third-person singular simple present demagogues, present participle demagoguing, simple past and past participle demagogued)
(intransitive and transitive) To speak or act in the manner of a demagogue; to speak about (an issue) in the manner of a demagogue.
Source: Wiktionary
Dem"a*gogue, n. Etym: [Gr. act: cf. F. démagogue.]
Definition: A leader of the rabble; one who attempts to control the
multitude by specious or deceitful arts; an unprincipled and factious
mob orator or political leader.
Source: Webster’s Unabridged Dictionary 1913 Edition