What role did peter the hermit play in the first crusade

Peter the Hermit was present at the Council of Clermont, according to certain historians and started supporting the First Crusade immediately after. He became the biggest proponent of the Crusade and used his blistering sermons to rouse the public support in for the First Crusade.

Props to google.

the french revolution was when many people were persecuted for disagreeing or making separate government