「demand + of + 人 + もの/こと」= 「demand + もの/こと+ from (of) + 人」人を目的語にとらない
e.g.1: He demanded of her a full explanation. (= He demanded a full explanation from (of) him.)
e.g.2: Ebony and Ivory didn't demand of people to reflect upon it, but politely asked them to do so.
tat