In 1997, Tarana Burke sat across from a 13-year-old girl who had been sexually abused. The young girl was explaining her experience, and it left Ms. Burke speechless. That moment is where the Me Too campaign was born.

“I didn’t have a response or a way to help her in that moment, and I couldn’t even say ‘me too,’ ” Ms. Burke said.

“It really bothered me, and it sat in my spirit for a long time,” she added.

Ten years after that conversation, Ms. Burke created Just Be Inc., a nonprofit organization that helps victims of sexual harassment and assault. She sought out the resources that she had not found readily available to her 10 years before and committed herself to being there for people who had been abused.

And she gave her movement a name: Me Too.

On Sunday, those two words burst into the spotlight of social media with #metoo, a hashtag promoted by the actress Alyssa Milano. Amid the firestorm that ignited, some women of color noted pointedly that the longtime effort by Ms. Burke, who is black, had not received support over the years from prominent white feminists.