One of my vivid memories of participating in World Youth Day 2005 in Cologne is the contribution to the Youth Festival by Aid to the Church in Need, a presentation entitled Pelikan. This presentation illustrated the witness of the martyrs of the 20th Century.
Go here to see details of their contribution at World Youth Day 2016 in Krakow. This reflects the witness of the martyrs of our own days.
See this page for more: #LetsBeOne.