Dark tourism refers to the visiting of "incidences of death, disaster and atrocity" made while still "within living memory," according to the term's coiners, authors John Lennon and Malcolm Foley.

Christie’s, which values the work at more than $1 million, said the proceeds from any sale would be shared with the heirs of an art collector killed in a concentration camp.

Opinion editor Matthew T. Hall has written three columns over the past month about a Holocaust remembrance where a rabbi’s remarks were censored in Columbia. This is his most personal yet.

In Vienna in the early decades of the last century, Fritz Grünbaum amassed an art collection that included hundreds of works.