"The term "person of color" (plural: people of color, persons of color; sometimes abbreviated POC)[1] is today primarily used to describe any person who is not considered white in the United States. [...] The term emphasizes common experiences of systemic racism."
The common experience of discrimination against non-white people part is really important, and it's also why it doesn't apply world-wide. A Japanese person in Japan does not have the same experience of being in a minority as a Japanese person in the US does.
Re: Yuletide: Pandemic Edition
"The term "person of color" (plural: people of color, persons of color; sometimes abbreviated POC)[1] is today primarily used to describe any person who is not considered white in the United States. [...] The term emphasizes common experiences of systemic racism."
The common experience of discrimination against non-white people part is really important, and it's also why it doesn't apply world-wide. A Japanese person in Japan does not have the same experience of being in a minority as a Japanese person in the US does.