How are boys supposed to know what it means to be a man when pop culture celebrates sexual harassment and disrespect? Can boys not be men when society is telling them gender doesn’t matter? In the case of mass shooters, is one of the common threads the lack of socialization of the shooter or their failure of instruction of what it means to be a man? Dr. Leonard Sax, author of “Why Gender Matters,” joins Dan and Amy to explain why gender matters.