Listen to the next discussion you hear of tensions between Japan and two of its neighbors, South Korea and China. You'll hear again and again that an important root problem is Japan's difficulty in coming to terms with its history of World War II-era aggression in China and use of Korean "comfort women" as sex slaves for its troops.
Listen to the discussions you're about to hear on the 25th anniversary of the Tiananmen Square crackdown in China. You'll hear about the distortions arising from the Chinese government's refusal to come to terms with its suppression of protest then, let alone the large-scale terrors of the Cultural Revolution and the politically engineered mass starvations of the Great Leap Forward era.
Listen to any discussion of politics and economics in Europe, and see how much turns on recognition of Germany's doing as much as a country can to come to terms with the atrocities of its Nazi era. Or consider what the struggle for "truth and reconciliation" has done to increase post-apartheid South Africa's chances for political and economic progress.
Then read Ta-Nehisi Coates's magnificent new article in the latest issue of the Atlantic. It is about America's failure to come to terms with a central, brutal reality of our long-ago past and our ongoing present. When he talks about "reparations," he is talking about a process that begins with facing the truth, and the past, with the honesty we fault the Japanese or Chinese for failing to display.