Melissa DePino didn't take the infamous April video that showed two black men being handcuffed and ejected from a Philadelphia Starbucks—but she agreed to post it.
"I know these things happen," the writer says, "but I'd never actually witnessed it myself. And when I saw it I thought 'people need to see this.'"
So she uploaded and pressed "send." It got millions of views, and people are still talking about it.