From an NPR article, "In 1980, Congress responded by establishing a commission to investigate the legacy of the camps. After extensive interviews and personal testimonies from victims, the commission issued its final report, calling the incarceration a "grave injustice" motivated by "racial prejudice, war hysteria and the failure of political leadership"

Sounds like your great uncle made lemonade when life gave him lemons. Doesn't mean it was ever okay and that we should be talking about doing it all over again.