옥석구분이 · 옥석구분을
good and bad perishing together, indiscriminate destruction
Example
무리한 단속은 옥석구분의 결과를 낳을 수 있습니다.
Heavy-handed crackdowns can end up harming the innocent along with the guilty.
Word parts
옥 jade+석 stone+구 together+분 burn
Literally 'jade and stone burn together' — fire doesn't care which is precious.
Good to know
Often misused as if 구분 meant 'distinguish'; for sorting good from bad, say 옥석을 가리다 instead.