Axios interview: Facebook to try for more transparency

• "We're not yet in the kind of sustainable, sensible place as far as how we make Facebook data available to external researchers," Clegg said.
• "That's a journey we're on. We are keen that Facebook should try and make meaningful data available."

When I asked Clegg what he learned from the series, he said Facebook "gets no benefit of the doubt at all, fairly or unfairly." He pointed to the Journal account of anti-vax activists flooding the site.

• "We are told constantly and forcefully by experts that brushing all vaccine hesitancy content under the carpet ... would be counterproductive," Clegg said. "It fosters the idea amongst many Americans [of a] conspiracy. "

Clegg said Facebook won't "go into some sort of defensive crouch ... We need to be tough on ourselves. That's exactly why we commission this research."

Go deeper: The limits to Facebook's transparency