He claims that prejudice against homosexuals would cease overnight if all the gay stars in the country were honest about their sexuality.

prejudice 由前缀 pre-（表示"预先"）和词根 judice（来自拉丁语 judicium，意为"判断"）组成，字面意思是"预先判断"，即"在没有充分了解情况前就形成的负面看法"，引申为"偏见、成见"。 against 在这里是介词，表示"针对、反对"的意思，构成 prejudice against 这个固定搭配。 prejudice against 表示"对...的偏见"，特指对特定群体的负面刻板印象或歧视态度。