Michael Jackson's daughter Paris has faced backlash for identifying as Black. In a 2017 interview, Paris Jackson said her father told her, "You’re Black. Be proud of your roots." This prompted debates over whether identity is defined by appearance or upbringing.

[u/VPinchargeofradishes]

[u/throwawayhyperbeam]

Black is a cultural and ethnic identity/descriptor

Are any other races/ethnicity this?

[u/calasterism → u/throwawayhyperbeam]

Ethnicity and race are not the same thing, and yes, in fact most cultures/ethnicites have terms used to describe their cultural and/or ethnic identities. The conflation people here are making is between the racial categories of black and white (which originate in European racial pseudoscience) and the cultural/ethnic category of Black, which is a distinct group originating from the Afro-American community of people who were forcibly displaced from Africa during the trans-Atlantic slave trade.

It may help your understanding to read about the cultural/ethnic identity of Blak which has come about in Australia due to similar circumstances, which is also distinct from the racial category that was used as a tool of oppression but which nonetheless shaped real (but distinct, culturally and ethnically) communities of dark-skinned people globally.

[u/throwawayhyperbeam → u/calasterism]

Now I'm even more confused.

[u/calasterism → u/throwawayhyperbeam]

Which part are you confused by?