Darrow uses charged language, such as “crazy” and “barbarous” and “ashamed” to persuade the judge and audience to reject the death penalty in spite of the horrible crime Leopold and Loeb committed.
Darrow appeals to people's emotions and reason or common sense by using those strong words to convey that taking Leopold and Loeb's lives is something completely barbarous, shocking and is against the century they are in and the teaching of every religious, and seer and prophet that has existed. In short, to kill the boys is totally wrong, and Darrow aims to persuade the judge and audience of that.