At 10:00 am this morning Pope Francis presided in St Peter's Square at the solemn liturgical celebration of Palm Sunday and the Passion of the Lord. In the center of the square near the obelisk, the Pope blessed the palms and olive branches carried in the procession that made its way to the esplanade of St. Peter’s Basilica for the celebration of the Mass of the Lord's Passion.
Taking part in the celebration were young people from Rome and from many other dioceses who celebrate today the 33rd Anniversary of World Youth Day that has as its theme this year: "Do not be afraid, Mary, because you have found favor with God" (Lk 1:30)
At the conclusion of the Eucharistic celebration and before the Apostolic Blessing, the conclusions and final document of the Pre-Synodal Meeting that was held this past week in Rome were presented to the Holy Father in preparation for the XV Ordinary General Assembly of the Synod of Bishops scheduled for October 2018 on the theme: "Youth, the faith and vocational discernment".
Below is the homily that Pope Francis pronounced after the proclamation of the Lord's Passion according to Mark:
Jesus enters Jerusalem. The liturgy invites us to share in the joy and celebration of the people who cry out in praise of their Lord; a joy that will fade and leaves a bitter and sorrowful taste by the end of the account of the Passion. This celebration seems to combine stories of joy and suffering, mistakes and successes, which are part of our daily lives as disciples. It somehow expresses the contradictory feelings that we too, the men and women of today, experience: the capacity for great love... but also for great hatred; the capacity for courageous self-sacrifice, but also the ability to “wash our hands” at the right moment; the capacity for loyalty, but also for great abandonment and betrayal.
We also see clearly throughout the Gospel account that the joy Jesus awakens is, for some, a source of anger and irritation.
Jesus enters the city surrounded by his people and by a cacophony of singing and shouting. We can imagine that amid the outcry we hear the voice of the forgiven son, the healed leper, or the bleating of the lost sheep. Then too, the song of the publican and the unclean man; the cry of those living on the edges of the city. And the cry of those men and women who had followed Jesus because they felt his compassion for their pain and misery... That outcry is the song and the spontaneous joy of all those left behind and overlooked, who, having been touched by Jesus, can now shout: “Blessed is he who comes in the name of the Lord”. How could they not praise the one who had restored their dignity and hope? Theirs is the joy of so many forgiven sinners who are able to trust and hope once again.
All this joy and praise is a source of unease, scandal and upset for those who consider themselves righteous and “faithful” to the law and its ritual precepts.  A joy unbearable for those hardened against pain, suffering and misery. A joy intolerable for those who have forgotten the many chances they themselves had been given. How hard it is for the comfortable and the self- righteous to understand the joy and the celebration of God’s mercy! How hard it is for those who trust only in themselves, and look down on others, to share in this joy. 
Here is where another kind of shouting comes from, the fierce cry of those who shout out: “Crucify him!” It is not spontaneous but already armed with disparagement, slander and false witness. It is the voice of those who twist reality and invent stories for their own benefit, without concern for the good name of others. The cry of those who have no problem in seeking ways to gain power and to silence dissonant voices. The cry that comes from “spinning” facts and painting them such that they disfigure the face of Jesus and turn him into a “criminal”. It is the voice of those who want to defend their own position, especially by discrediting the defenceless. It is the cry born of the show of self-sufficiency, pride and arrogance, which sees no problem in shouting: “Crucify him, crucify him”.
And so the celebration of the people ends up being stifled. Hope is demolished, dreams are killed, joy is suppressed; the heart is shielded and charity grows cold. It is cry of “save yourself”, which would dull our sense of solidarity, dampen our ideals, and blur our vision... the cry that wants to erase compassion.
Faced with such people, the best remedy is to look at Christ’s cross and let ourselves be challenged by his final cry. He died crying out his love for each of us: young and old, saints and sinners, the people of his times and of our own. We have been saved by his cross, and no one can repress the joy of the Gospel; no one, in any situation whatsoever, is far from the Father’s merciful gaze. Looking at the cross means allowing our priorities, choices and actions to be challenged. It means questioning ourselves about our sensitivity to those experiencing difficulty. Where is our heart focused? Does Jesus Christ continue to be a source of joy and praise in our heart, or does its priorities and concerns make us ashamed to look at sinners, the least and forgotten?
Dear young people, the joy that Jesus awakens in you is a source of anger and irritation to some, since a joyful young person is hard to manipulate.
But today, a third kind of shouting is possible: “And some of the Pharisees in the crowd said to him, “Teacher, rebuke your disciples.” He replied, “I tell you, if these were silent, the very stones would cry out” (Lk 19: 39-40).
The temptation to silence young people has always existed. The Pharisees themselves rebuke Jesus and ask him to silence them.
There are many ways to silence young people and make them invisible. Many ways to anesthetize them, to make them keep quiet, ask nothing, question nothing. There are many ways to sedate them, to keep them from getting involved, to make their dreams flat and dreary, petty and plaintive.
On this Palm Sunday, as we celebrate World Youth Day, we do well to hear Jesus’ answer to all those Pharisees past and present: “If these were silent, the very stones would cry out” (Lk 19:40).
Dear young people, you have it in you to shout. It is up to you to opt for Sunday’s “Hosanna!”, so as not to fall into Friday’s “Crucify him!”... It is up to you not to keep quiet. Even if others keep quiet, if we older people and leaders keep quiet, if the whole world keeps quiet and loses its joy, I ask you: Will you cry out?
Please, make that choice, before the stones themselves cry out.
 Cf. R. Guardini, El Señor, 383.?
 Cf. Apsotolic Exhortatngelii Gaudium, 94.