We've both refused to own our past national transgressions the way Japan and Germany have, we have more diversity than all of those countries, and have also not scrubbed all mention of said painful past from our national history like Russia and China.
Germany I can see, but I thought Japan also refused to own many of their past national transgressions.
I can stretch your analysis even further, don't some in Japan turn to heavy drinking as a way to cope with societal distancing, alienation and isolation? I read about it, at least.