Holocaust survivor Rabbi Yisrael Meir Lau said during Monday’s March of the Living that the suffering of Holocaust survivors is a disgraceful stain which shadows over all of us.

Around 8,000 people, from Australia to Canada, as well as Israel and across Europe, took part in the annual march, a three-kilometer (two-mile) walk from Auschwitz to the vast death camp of Birkenau, site of most of the gas chambers.