‘US government documents admit that the atomic bombing of Hiroshima and Nagasaki was not necessary to end WWII. Japan was on the verge of surrendering. The nuclear attack was the first strike in Washington's Cold War on the Soviet Union. Ben Norton reviews the historical record.’
There's a heavy dose of shame and denialism too. To be told your whole life that you are the good guys and that your country gets into every war for noble reasons, you have to really reconcile atrocities in a way that doesn't conflict with that myth. To do so otherwise is admit your entire upbringing is a lie, your leaders are malicious psychopaths, and that you've been complicit in voting for them your whole life. That can really really break people. It's a greatly traumatic thing and is on par with losing your religion or estranging yourself from family.
I'd say for the majority of American liberals, they understandably have a difficult time facing the truth. Because the truth is fucking dark.