Oggi, ma allora era quella imperiale e quindi:
Due to the flag being used by the Imperial Japanese military and Japan's actions during World War II, it is offensive in East Asia, particularly in South Korea,[16][17][18] which was formerly ruled under Japan, and China.[19][20] Some World War II veteran groups in the United States have also campaigned against its use.[21] The symbol is associated with Japanese imperialism in the early 20th century[16][17][18][19][22][23][24] because of its use by Japan's military forces during that period.
https://en.wikipedia.org/wiki/Rising...tates_military