The artwork highlights the blindness of people thinking of data as objective, unambiguous and interpretation free
thinking of data as objective, unambiguous and interpretation free修饰【blindness of people】
还是of people thinking of data as objective, unambiguous and interpretation free修饰blindness?
第二个判断正确：
of people thinking of data as objective, unambiguous and interpretation free 修饰 blindness 。
of 后面接的是“动名词复合结构”。thinking 为动名词，people 为逻辑主语。