In reality, someone had taken a clip of Pelosi, in which her speech was normal, and altered its speed and the tone of her voice to create the effect. YouTube has removed the Pelosi videos. The company didn't have a policy that content posted on its service had to be true, the spokesperson added. The video was slowed down to make her appear confused and as if her age is finally catching up to her. Democrats brought the video to Facebook's attention, letting them know the video had been doctored.
Twitter declined to comment. In recent weeks, far-right provocateurs were banned from the platform in part due to their embrace of hate speech, which frequently circulated false or misleading information.
It's unclear how many viewers of the videos understood them to be altered caricatures, but the footage is getting plenty of traction.
A Reuters review of Pelosi's news conference on Thursday shows her covering a wide range of topics and speaking in a mostly animated way, jousting with reporters at times and at other times reading from a statement.
Hawaii Democratic Sen. Brian Schatz was more blunt in a Twitter message Friday: "Facebook is very responsive to my office when I want to talk about federal legislation and suddenly get marbles in their mouths when we ask them about dealing with a fake video". Presidential advisor Rudolph Giuliani is also among those taken in by a Pelosi video.
But the Pelosi video is a clear example of even low-tech, relatively simple editing can dupe viewers and trigger widespread disinformation.More news: Polls open in Czech Republic, centrists seek win
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When one of Facebook's fact-checking partners rates a post or video as false on the platform, it automatically triggers a change in how Facebook's algorithm handles that content, Facebook, as well as Politifact and LeadStories confirmed to CNN on Friday.
The use of altered videos has led US intelligence officials to issue a warning ahead of the 2020 elections. "Her speech pattern is freakish".
With Trump's Cabinet members (Treasury Secretary Steven Mnuchin) refusing to cooperate with subpoenas from Congress, Majority Leader Mitch McConnell going to bat for the president in the Senate, Barr as attorney general and Neil Gorsuch and Brett Kavanaugh on the Supreme Court, I see no other alternative than impeachment proceedings.
"I'm calling for impeachment now because the Mueller report is out, and in it (special counsel Robert Mueller) describes 10 obstruction of justice charges that he could not bring because of a Department of Justice rule and regulation that says you can't indict a sitting president - that's (reason) number one", former Rep. Tom Coleman, who represented Missouri for almost two decades, told CNN's Erin Burnett on "OutFront".