The idea first came to Teresa Shook, a Hawaii retiree, in the hours after Donald Trump was elected. Perhaps, she suggested to a few friends on Facebook, women could march on Washington to show the depth of their resistance. Two days later, New York fashion designer Bob Bland joined the call for action with her own message. "Who wants to join me?!?" she asked. Turns out, a whole lot of people did. The astounding sea of women in bright pink "pussy hats" — half a million in Washington alone, and many more in hundreds of marches elsewhere — became the face of the resistance to Trump and his agenda.