Well, it's because it's unfair to be paid less than you should be paid for the value of your work. That's really what it is. It's unfair that you're not paid as much just because you happen to have chosen a job that is done mainly by women. It's not fair that you're not paid enough when you're taking care of everybody around you and you are paid less for your work than you would be if you were a janitor or a technician. You are always there to take care of kids in child care, people in their old age, or vulnerable people, and you earn $12, $13, or $14 an hour. That's wrong and it has to be fixed. That's really what it is.
On May 4th, 2016. See this statement in context.