In observance of Yom HaShoah read the testimonies of this year's Torchlighters. Every year Yad VaShem chooses six survivors to light the commemorative torches. I would also suggest that you watch the below video. I keep coming back to this testimony, but I cannot escape its closing words: "Shalom yeladim." "....We never saw them again."
You can watch other video testimonies here. As Elie Wiesel said: "For whoever listens to a witness becomes a witness."