Boys run alongside German army recruits marching to barracks at the start of compulsory military service in Berlin, 1936. Photo by Stiehr/FPG/Archive Photos/Getty Images) Twenty-five-year-old Rehman lives with his parents and siblings in Lahore, Pakistan. He’s the youngest of the family and works remotely for a British marketing firm. “I don’t usually go outside,” he says; he spends his leisure hours online. “Porn is my cardio.” But that’s not all he does on the internet. He recently commented on Instagram that only 271,000 Jews died in the Holocaust – and that was “not enough”. Rehman’s not alone. Not in this sense at least. Click on posts about the Holocaust and you’ll likely see “271k” in the comments. This internet shorthand for the fallacy stems from a document attributed to the Red Cross about death certificates for 13 camps when it administered what is now called the Arolsen Archives, which holds records of victims and survivors of Nazi persecution.…