These are "stumbling stones," Demnig's extraordinary memorial to the more than 6 million killed in the Holocaust. Gunter Demnig, the artist behind the "stumbling stones," installs brass plaques for individuals killed in the Holocaust. How it worksOne of the unique aspects of the stumbling stones is that it is a growing, grassroots memorial. Families and friends wishing for their loved ones to be memorialized write to the Stumbling Stones Foundation set up by Demnig. Since the project started, nearly 400 stumbling stones have been stolen and the number is on the rise.

Source: CNN March 29, 2018 04:18 UTC