Saturday's marches by the numbers.
21: Renditions of "Happy Birthday" sung by protesters to a policewoman serving on her special day.
6: Age of Sofie Cruz, immigration activist who melted hearts and called for all to "fight with love, faith, and courage."
3: Times larger the crowd was on Saturday than Friday in Washington, according to crowd experts.
430,000: More Metro trips taken on Saturday than Friday in Washington.
-20: Degrees Fahrenheit in Fairbanks, where 2,000 marched.
5: Million people estimated to participate worldwide.
32: Trump's approval rating at the time of the march.