Holland’s national Holocaust museum excluded four pictures taken at Auschwitz from a current exhibition.

The Jewish Cultural Quarter of Amsterdam, which consists of the National Holocaust Museum, dismissed criticism that the pictures were censored, saying they were left out because they do not portray Dutch Jews, who are the focus of the exhibition.

A curator told the Volkskrant daily, which first reported the development, that the exclusion was due to the graphic nature behind the photos.

As much as 78 percent of Dutch Jewry perished in the Holocaust—more than 100,000 men, women and children.