How did french commoners respond to the bread shortage?

I believe they began to protest, didn't they? They stormed the castle and Marie Antoinette said give them Cake?

Bread shortage resulted in the Réveillon riots in April 1789. It ultimately led to the French Revolution.

South carolina was so angry about the election of lincoln that they seceded from the union on december 20, 1860. they attacked fort sumter later, on april 12, 1861.