Demagogue
/ˈdem.ə.ɡɒɡ/ noun mediumA leader who gains power by appealing to people's emotions and prejudices rather than reason.
Historians warned that the fiery speaker was a classic demagogue, stirring up fear instead of offering real solutions.
Memory Trick
'Demo-' means people (as in 'democracy'), and '-agogue' means leader (as in 'pedagogue') — a demagogue is literally a leader of the people, but one who manipulates them rather than serving them.