An orator or leader who gains favor by exciting the passions and prejudices of the audience
It is true that America has a paranoid streak in its politics, and demagogues come along from time to time to feed on anger and resentment. — Evan Thomas, , Newsweek 2010-12-04.
dema·gogue demagogues in AM, also use demagog disapproval If you say that someone such as a politician is a demagogue you are criticizing them because you think they try to win people's support by appealing to their emotions rather than using reasonable arguments. a political leader who tries to make people feel strong emotions in order to influence their opinions - used to show disapproval demagoguery (demagogos, from demos + agogos )
\DEM-uh-gog\, noun: 1 A leader who obtains power by means of impassioned appeals to the emotions and prejudices of the populace 2 A leader of the common people in ancient times
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