system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why is the Japanese national anthem so controversial?
gpt
Wrote this in the other post, but it comes down to the average Japanese person's lack of desire to return to the militaristic, god-emperor days of the early 20th century which led the country to war and ruin.  The flag, the emperor and the anthem where things to be venerated and worshiped above all.  Didn't work out so well.

However, all of this is unlikely to happen as the country is completely different culturally and the only people making an issue out of it are pretty much the same type that think Obama is going to impose martial law in the U.S.

Go to a major sports event and if a Japanese wins a medal you'll get everyone singing Kimigayo loudly. The current emperor and empress are seen as a nice old couple who set an example of what proper modern Japanese behaviour should be.