I dont think it is racism Chris, but might be a little bit of a "culturism" issue going all the way back to the period of "Eurocentricity". You have to remember that a great portion of America at the time were first, second, or third generation European immigrants. Many Americans back in the 1940s could easily remember their parents or grandparents speaking fondly of their homeland. I am not sure what portion of the oldest generation at the time (in their 70s) were immigrants, but it was certainly a fairly high number. Also, I think, at the time, that it was much easier for word of the war in Europe to reach America putting it a little more in the forefront. Additionally, war in Europe started much sooner than war in the Pacific so the focus was already there. One final point may be that Hitler was much more visible an enemy and therefore easier to vilify. Hirohito was no angel, but I think the cultural difference made him made him, at the time, much more difficult to identify with, hate, and be scared of. Look at Timothy McVeigh, as an example. One of the reasons he was so scary when compared to some of your more ethnic looking terrorists is that he could have easily been your neighbor, coworker, or even relative, and you would never suspect him just by looking at him. Hitler, when not dressed up in all of his regalia, had that quality as well. I don't think any one of these things was responsible for the phenomenon you asked about, but when combined make a pretty good explanation.