Demagogue is defined as a political leader who seeks support by appealing to the desires and prejudices of ordinary people rather than by using a rational argument. Some synonyms for a demagogue are fanatic, fomenter, hothead, incendiary, inciter, instigator, politician, rabble-rouser, radical, rebel, revolutionary, troublemaker. It's an election year in the US. Things are promising to get weird and/or violent. The rest of the world looks like their having the same fight coming to their doors.