. >> reporter: like my grandmother, michael goldman gilad, now 96 years old, lost most of his familye holocaust. he survived the horrors of multiple concentration camps, including auschwitz, and he survived the infamous death march. >> translator: it was january 18th, 1945. we were taken out in rows of 1,000 each, and there were ss officers with dogs, and we were made to march. it was heavy snow, and it seemed implausible, but we marched 60 kilometers that night. >> reporter: thousands of people died during that brutal death march. little did goldman gilad know he would go on to play a pivotal role as an investigator in the trial of adolf eichmann. >> translator: i was in my investigation room, and when he entered the room, i saw a poor, frightened person shaking. and in comparison to eichmann in his ss uniform, this uber mensch, i couldn't believe it. it was the same person standing in front of me responsible for the dead of my parents. when he opened his mouth, i cannot forget this. when he opened his mouth, i saw the doors of the crematorium open. >> reporter: goldman gilad and th

>> fred, both of these men who i had the privilege to interview, gabrielle bach and michael goldman giladthey both stressed to me that the lessons that they learned from that and from the trial that followed are relevant today and will be relevant into the future. i mean, just think about the past few weeks. we've seen auschwitz itself, the barracks at auschwitz, was desecrated with nazi graffiti. we saw the incident a week or two ago in the united states where a school admin stimistrat said if schools are going to teach the holocaust they have to teach the opposing view. i can't imagine what that might be. and holocaust denialism, people saying it didn't happen or it was exaggerated are alarmingly high and rising. that's why we can never forget. this is a threat that remains with us today. i think the lesson from 60 years ago remains just as relevant now. >> i miean, the occurrences doe underscore the ignorance and like you said denyism. they know the facts but want to portray this image or this thinking that it couldn't have possibly happened. so just as we saw in your piece, while thro

. >> like my grandmother, michael goldman gilad now 96 years old lost most of his family to the holocaustration camps including auschwitz. and he survived the infamous death march. little did goldman gilad know he would go on to pay a pivotal role as an investigator in the trial of adolf eichmann. >> translator: i was in my investigation room. and when he entered the room i saw a poor, frightened person shaking. and in comparison to eichmann in his ss uniform, this ubermoench, i couldn't believe that it was the person responsible for the death of my parents. but when he opened his mouth, i cannot forget this. when he opened his mouth, i saw the doors of the crematorium open. >> after months of the prosecution presenting its case, eichmann finally took the stand in his own defense. under cross-examination, despite being confronted with documents that showed his direct involvement, eichmann repeatedly claimed he was just following orders. >> i am not beating about the bush. i was also one of those receiving orders and not giving orders. >> he lied through and through. he was acting, he was