In the immediate aftermath of World War II, the sentiment “Never again” emerged in many contexts — was associated with emerged from a from a multinational community of camp prisoners bound together in anti-fascist solidarity to Jewish survivors organizing self-defense and revenge. As the Holocaust Museum LA learned this past week, that sentiment slogan has become explosively controversial. Many U.S. Jews imagine the Holocaust as a Jewish experience neatly partitioned from that of others and assume the slogan “Never again” is of an exclusively Jewish provenance. With this mindset, an anodyne statement easily becomes offensive. On Sept. 4, the Holocaust...