The Saracens had re-captured Jerusalem. In 1187 A.D. Balian of Ibelin surrendered the city to Saladin, a great hero of the Arabs.  The Crusaders were disheartened and on the run. In Europe, a sense of gloom prevailed.
And then, in 1212 A.D. there arose a 12-year-old shepherd boy, Stephen by name. “I have encountered the Lord!” cried Stephen. “He has given me a letter!” The letter purportedly authorized young Master Stephen to preach Crusade. 
And thus began the Children’s Crusade. News of Stephen’s mission “spread and soon children across France were laying down there hoes and flocking to the banner of one who was prophesying an army of children before whom the Mediterranean would part and the Saracen would lay down his arms.” 
In Germany, a child named Nicholas also preached the Children’s Crusade. 
Tens of thousands of children were soon on the march, headed towards Marseilles (the French crusaders) and Genoa (the German crusaders) where, they believed, the Mediterranean Sea would part before them. 
After the Parkland Massacre of February 14, 2018, people were disheartened. And then there arose a 17-year-old school boy, young Master Hogg. “We must eliminate the guns!” cried Hogg. Hogg’s inspiration was authorized by CNN and other mass media. It was time for another Children’s Crusade!
And so it came to be that, on the one-month anniversary of the Parkland Massacre, a National School Walkout was proclaimed. Students, teachers, school administrators, parents and allies were to participate in a walkout, for 17 minutes at 10am across every time zone on March 14, 2018! 
And how does it end? What will be the result? In the case of the original Children’s Crusade of 1212 A.D., the young crusaders reached Marseilles and Genoa but – Alas! – the Mediterranean Sea did not part before them. In Italy, after meeting with the Pope, some acknowledged the futility and returned to Germany. Others clung on, remaining in Italy. Meanwhile, in Marseilles, two merchants, William the Pig and Hugh the Iron, offered to transport the young crusaders by ship to their destination. And so it was that vessels were procured and the Children’s Crusade continued on its quest. But, a sad ending: in Palestine the children were sold as slaves to the Saracens. 
——- Sources ——-
 “Siege of Jerusalem (1187)”, Wikipedia, March 9, 2018. https://en.wikipedia.org/wiki/Siege_of_Jerusalem_(1187)
 The Crusades: History & Myths Revealed, by Michael Paine. New York: Fall River Press, 2009.
 “ENOUGH: National School Walkout”, https://www.actionnetwork.org/event_campaigns/enough-national-school-walkout