Iconoclasm was the main conflict that occupied the Papacy of Saint Gregory II. Gregory was a Roman noble who became a deacon,and later became the Papal secretary under Pope Constantine. Once in office,he almost immediately butted heads with the new emperor of Constantinople,Leo III. Leo wanted to exert his authority over the west by raising their taxes. This was met with angry Roman protests(led by the Pope!)driving eastern prefects out of the city. Relations were basically soured at this point so Leo went in for the kill by proclaiming that all religious icons,statues,pictures or relics of Jesus,Mary,or the Saints were to be destroyed. Leo’s reasoning for this was that a Islamic invasion of the east on top of various natural disasters meant that God was angry with his people. Why was God angry? Leo believed God thought that we were worshipping false gods with all our statues and pictures. Leo forbid even having any images in your private possession. Pope Gregory II was enraged. First,he excommunicated Leo(take that!),and then he sent him a letter,where he pretty much insulted Leo’s intelligence and told him that even children would think he was stupid. In this letter he says….
”You say: ‘We worship stones and walls and boards.’ But it is not so, O Emperor; but they serve us for remembrance and encouragement, lifting our slow spirits upwards, by those whose names the pictures bear and whose representations they are. And we worship them not as God, as you maintain, God forbid!… Even the little children mock at you. Go into one of their schools, say that you are the enemy of images, and straightway they will throw their little tablets at your head….”
Emperor Leo didn’t particularly like being called an imbecile by the Holy Father so he sent an army of Lombards into Italy to murder the Pope. Gregory II went on the offensive and bravely entered the Lombard camp to confront the king of the Lombards,Liutprand. The Pope laid the mother of all Catholic guilt trips on the Catholic Liutprand and this shaming caused the humbled king to enter Rome on foot,lay his arms on the tomb of St.Peter and pull his armies out of Italy. All of this back and forth is setting the table for the independence of the Pope from the eastern emperor. This is the beginning of the Papal States and the beginning of the Holy Roman Empire,which will come during the rest of the 8th century.
Iconoclasm will still be fought by the next Pope,Gregory III,and it will be fought again during the Protestant Reformation and even now by Islamic extremists in the middle east.