Robespierre was hardly a demagogue, he was only too honest and intense for his own good. He was the servant of the people. During the Jacobin's reign, France was stable but the regime was very strict so many people were unhappy. but when the liberals took power all hell broke loose.
Quoted by http://www.historyguide.org/intellect/lecture13a.html
In Robespierre's utopian vision, the individual has the duty "to detest bad faith and despotism, to punish tyrants and traitors, to assist the unfortunate and respect the weak, to defend the oppressed, to do all the good one can to one's neighbor, and to behave with justice towards all men
Edited by Quetzalcoatl