I'll address the three of you together: what's happening is there is a divergence in what the word "racist" means in academic and conversational settings. In many sociological circles today, "racist" no longer applies to the individual acts of bigotry and discrimination that arise from individual prejudice, but rather is used to describe symptoms and outgrowths of the racist system. This applies to school funding, health care, "crime stats," media portrayals (like Katy Perry's), etc.
Katy Perry may not be individually bigoted towards people of Japanese or Chinese descent, but she is most certainly participating wholesale in a racist culture that marginalizes and treats these cultures as interchangable and monolithic.
That was actually incredibly helpful and informative. I never thought of it that way. Thank you