If its "ok" to call a caucasian person white, and "ok" to call a dark skinned person black, then why.........?

...why is it bad to call a native person "red", or an asian person "yellow"? i really don't want to offend anyone, and i've never used either of those terms, but i have used "white" and "black" and it seems t be ok most of the time. and its not like a... show more ...why is it bad to call a native person "red", or an asian person "yellow"?

i really don't want to offend anyone, and i've never used either of those terms, but i have used "white" and "black" and it seems t be ok most of the time.


and its not like a "white" person is actually white, or a black person actually black, so why is it usually bad to call a native american person red (but they obviously aren't red) and an asian person yellow (obviously not yellow)?
Update: @ Baltimore Sun:
yeah thats why the largest proportion of the global population is asian...
nice try though.
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