Racists often describe other ethnic groups as subhuman, which is completely wrong.

subhuman 由前缀 sub-（表示"低于、次于"）和 human（人类）组成，字面意思是"低于人类的"。这个词带有强烈的贬义色彩，用来贬低某些群体，暗示他们不如正常人。