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Speaking to Congress today, the former Facebook manager first tasked with making the company make money did not mince words about his role. He told lawmakers that the company "took a page from Big Tobacco's playbook, working to make our offering addictive at the outset" and arguing that his former employer has been hugely detrimental to society.

Tim Kendall, who served as director of monetization for Facebook from 2006 through 2010, spoke to Congress today as part of a House Commerce subcommittee hearing examining how social media platforms contribute to the mainstreaming of extremist and radicalizing content.

"The social media services that I and others have built over the past 15 years have served to tear people apart with alarming speed and intensity," Kendall said in his opening testimony ( PDF ). "At the very least, we have eroded our collective understanding—at worst, I fear we are pushing ourselves to the brink of a civil war."