She is also contending with the relentless manipulation of social media by what she says are government-friendly sources to spread false information about her and Rappler. The se trolls focus on Facebook, which is where most Filipinos get their news. She has been called a foreign agent, a troublemaker, a tax cheat, a traitor and ugly.

Last week, two people whom Ms. Ressa suspects were working for the government managed to slip into Rappler’s building and broadcast a video on Facebook Live from just outside its door urging protests and social media attacks. Among the comments on the feed: “Hang Ressa,” “Bomb Ressa” and “Behead her.”

Government officials have said she is “enjoying” the attention. She is not, and Ms. Ressa reported the video to Facebook. She had already provided the company with copious evidence of the way its platform has been abused by Mr. Duterte’s troll army. This time Facebook responded by blocking the user who posted the video for 30 days (he may have popped up again on Facebook in Singapore, though).

It’s a cat-and-mouse game, and Ms. Ressa said Facebook is haphazard about enforcing the rules. While individual executives have been helpful, Ms. Ressa said, she’s had a hard time dealing with Facebook, which has responded slowly.

“Facebook is now the world’s largest distributor of news and yet it has refused to be the gatekeeper,” she told me in a recent onstage interview. “And when it does that, when you allow lies to actually get on the same playing field as facts, it taints the entire public sphere.” At some point, she said, Facebook has to “take down the lies.”

As she noted to me on Thursday night, “A lie told a million times is truth.” On social media, though, that is more like a billion times.

Ms. Ressa said she wished she had tried to stop the online abuse sooner: “We ignored it far too long and that is the lesson I have learned.”