An exhibition of the history of those scientific ideas that gave a grimy intellectual veneer to the Nazi genocide opens this week at the Canadian War Museum in Ottawa. The collection centres on eugenics, the notion that humanity can be improved and perfected by selective breeding and the elimination of individuals and groups considered to be undesirable. Entitled Deadly Medicine: Creating the Master Race, it reveals how it was not thoughtless right-wing thugs as much as writers and scientists, the intellectual elite, who led the movement. The exhibit is important, accurate but, regrettably, long overdue. It also fails to stress...