Particularly, Mr. Hooper wore a black veil that symbolize the sins that mankind hides. As he hid himself from his sins under the black veil everyone around him even his wife no longer sees his kindness or the good in his heart that he had in him before.
People who look at the black veil that Mr. Hooper was wearing thought either he was hiding something or was he shielding his eyes in order to scrutinize them. Mr. Hooper even got Neglected by old Saunders to his table where the clergyman blesses the food almost every Sunday.