The occupation authorities were focused on rebuilding Japan enough that it would become a bulwark against Soviet expansion. Anything that would demoralize or anger the population, like trying the Emperor for his part in the war or having trials related to Unit 731, was not going to happen.
Though even in that light it's difficult to understand why people like Ishii weren't quietly hanged. I can't imagine his cooperation produced a nontrivial amount of useful information we couldn't have gleaned from documentation.
In Shinto religion the emperor is viewed as direct descendant of the sun goddess Amaterasu.
During the rule of the Shogunate, the Emperor was simply a figurehead, a role he was relegated to again after WW2.
Cycles in an ecosystem.
During each phase of the cycle different groups and behaviors dominate.
In this case we are talking about moral ecosystems. 5 behaviors arranged in impact through the cycle >> exploration(morally neutral small groups) discovers something >> exploitation(morally negative but highly rewarding. small group) >> opportunism. rewards attract the majority. Morality is ambiguous. Costs multiply. >> moralists who have been screaming and taking hits through the entire cycle gain ground but dont have power to make change >> reputation/status sensitive actors(ie ppl with power) act on "moral grounds" only when they see themselves taking status/rep hits and stop acting as soon as they see status stabilize.
Similarly, cold war geopolitics quickly overcame the allied effort at de-nazification even while the Nuremberg tribunals were happening. Many prison sentences were commuted by ~1950. West German cooperation was more important.
The occupation authorities were focused on rebuilding Japan enough that it would become a bulwark against Soviet expansion. Anything that would demoralize or anger the population, like trying the Emperor for his part in the war or having trials related to Unit 731, was not going to happen.
Though even in that light it's difficult to understand why people like Ishii weren't quietly hanged. I can't imagine his cooperation produced a nontrivial amount of useful information we couldn't have gleaned from documentation.
In Shinto religion the emperor is viewed as direct descendant of the sun goddess Amaterasu. During the rule of the Shogunate, the Emperor was simply a figurehead, a role he was relegated to again after WW2.
Cycles in an ecosystem. During each phase of the cycle different groups and behaviors dominate. In this case we are talking about moral ecosystems. 5 behaviors arranged in impact through the cycle >> exploration(morally neutral small groups) discovers something >> exploitation(morally negative but highly rewarding. small group) >> opportunism. rewards attract the majority. Morality is ambiguous. Costs multiply. >> moralists who have been screaming and taking hits through the entire cycle gain ground but dont have power to make change >> reputation/status sensitive actors(ie ppl with power) act on "moral grounds" only when they see themselves taking status/rep hits and stop acting as soon as they see status stabilize.
Similarly, cold war geopolitics quickly overcame the allied effort at de-nazification even while the Nuremberg tribunals were happening. Many prison sentences were commuted by ~1950. West German cooperation was more important.