The arrival of Hungarian Jews at Auschwitz in the summer of 1944. Credit: Allgemeiner Deutscher Nachrichtendienst-Zentralbild (Bild 183), German Federal Archives via Wikimedia Commons. Holocaust survivors and those involved in efforts to maintain the memory of the Shoah are up in arms over plans to put some 20 Nazi artifacts up for auction next week. Among the artifacts to be sold by Pentagon Auctions are daggers, what the auction house has described as a “particularly rare” SS officer’s helmet, a Nazi symbol the auction house says was screwed onto senior Nazi officials’ cars, a five-yard-long flag that was hung on...