Consisting of a rose bush and a plaque, the memorial commemorates August 2, 1944, the day the Nazis perpetrated the single biggest act of mass murder in their genocide of the Roma people . On that day around 4000 men, women and children were murdered in the extermination camp at Auschwitz-Birkenau. All told, perhaps as many as 500,000 Roma and Sinti people (around half of the European population at the time) died in the Nazi Holocaust – a genocide that many among the Romani peoples call the Porajmos (the “Devouring”). The Roma and the Sinti belong to diasporic peoples who...