Traumas suffered by a society generations ago can still have a negative effect centuries later.
This is something Americans of a certain age should have no difficulty understanding. Half a century ago, we had to grapple with a dysfunctional and unjustifiable system of legally imposed racial segregation. It was a legacy of the Civil War a century before and of slavery before that.
Americans managed to reform that system, but it wasn't easy. Getting rid of policies that are the responses to long-ago traumas is a difficult business.
Two current instances, one facing America and the other facing Europe, come to...