(CNN) A day after hundreds of thousands of people protested gun violence at March for Our Lives events in the US and around the globe, Pope Francis called on the world's youth to continue speaking out and standing up.

"Dear young people, you have it in you to shout," the Pope said in his Palm Sunday address at St. Peter's Square in Rome.

Pope Francis at the the end of Palm Sunday Mass in Vatican City

Palm Sunday -- celebrated on the Sunday before Easter -- is commemorated by Christians as the day Jesus entered Jerusalem in the week of his crucifixion, when palm leaves were strewn in his path. Noting that this Palm Sunday coincides with World Youth Day, the pontiff used the opportunity to compare youth to Jesus's followers, who were scorned by his detractors.

"It is up to you not to keep quiet," Pope Francis said. "Even if others keep quiet, if we older people and leaders -- so often corrupt -- keep quiet, if the whole world keeps quiet and loses its joy, I ask you: Will you cry out?"

A day earlier, survivors of the shooting massacre at a Parkland, Florida high school led protests around the country and even abroad in favor of stricter gun control laws.