Because that flag represents a culture that most do not appreciate. It shows the mistakes of the USA and how we treated humans like animals it was immoral, and we needed to grow from it and remember the mistakes not celebrate them.
The correct answer is A. American principles traditionally opposed colonization.
That's because they were a colony so naturally they would hate colonization.
The efforts of the Manchu rulers, from the beginning of their rule, to become assimilated into Chinese culture bred strongly conservative Confucian political and cultural attitudes in official society and stimulated a great period of collecting, cataloging, and commenting upon the traditions of the past.