On Inauguration Weekend, an estimated 3.2 million people in hundreds of cities across the country took to the streets to protest the incoming president. More than 400,000 people marched in Washington, D.C., similar numbers turned out in New York and Los Angeles, and even in Houston, Phoenix, New Orleans, Santa Fe, and Reno, marchers numbered in the tens of thousands. It was, as organizers promised it would be, the most massive coordinated demonstration an incoming president has ever faced. But its real power will be measured not in crowd size but in the lasting impact it has on the political process. And one of the clearest results of the march — and of the election as a whole — is the wave of political participation among women at local, state, and national levels that’s emerging in its wake.