In 2013, Alicia Garza wrote what she called “a love letter to Black people” on Facebook, in the aftermath of the acquittal of the man who murdered seventeen-year-old Trayvon Martin. Garza wrote:
Black people. I love you. I love us. Our lives matter.
With the speed and networking capacities of social media, #BlackLivesMatter became the hashtag heard ’round the world. But Garza knew even then that hashtags don’t start movements—people do.