儿童的哭声让人们对美国的政策感到愤怒

whistle-blower - n. a person who tells police, reporters, etc., about something (such as a crime) that has been kept secret

humane - adj. kind or gentle to people or animals

exempt - v. to say that (someone or something) does not have to do something that others are required to do

draw - n. someone or something that causes a lot of people to come to a place

challenge - v. to say or show that (something) may not be true, correct, or legal

conscience - n. the part of the mind that makes you aware of your actions as being either morally right or wrong

horrified - adj. greatly upset and shocked