January 21, 2017. New York, New York. On Saturday, January 21 more than 400,000 people marched through Manhattan in solidarity with the Women’s March on Washington, according to the Mayor’s Office. Although the exact numbers are debated, hundreds of thousands of people marched from the United Nations on 42nd Street and then turned up Fifth Avenue to march all the way to the Trump Tower. More than 2 million people across the world marched in solidarity.