International Women’s Day is a global celebration in more than 100 countries today, but many Americans may have only a vague awareness of the holiday. This might soon change, if grassroots organizers (including the group behind this January’s Women’s March on Washington) succeed in their efforts to convince women around the world to join in a “day of action,” including a labor strike, this March 8. As International Women’s Day approaches, take a look back at its origins in the United States more than a century ago, and how far it has come since then. Controversy clouds the history of...