The campaign was directed against corporate greed.

directed 是动词 direct 的过去分词形式，direct 的意思是"指引、对准"，这里表示"把...对准某个方向"。 against 是介词，意思是"反对、对抗"，表示对立或反对的关系。 directed against 这个短语表示"针对...的、把矛头指向..."，强调行动或措施是针对某个特定对象或问题的。