A high school senior, Yaocihuatl Reyes didn't pay much attention to the presidential race until she found her teacher sobbing and her east Los Angeles classmates terrified that the election of Donald Trump would lead to the deportation of their families.
At that moment, the 17-year-old daughter of a nurse and security guard with little political upbringing said she felt driven to act.
She and a friend asked students from nearby high schools in the predominantly Latino neighborhood to meet at a park, where they decided to lead a walkout. They made signs, wrote chants and mapped routes for the march to City Hall days later. Hundreds took part.
"We just wanted to go...