Zuckerberg was asked by ReCode's Kara Swisher in a July 18 interview if he would take down conspiracy-theory content such as what is promulgated by the Infowars website.
"Sometimes countries may have laws on the books - this is certainly true in the United States, I can say as an American lawyer - that are really out of date with how that culture thinks about speech, that are no longer enforced. Denying the heinous and indescribable atrocities carried out by the Nazis is a awful affront to the memories of the six-million innocent Jewish men, women and children who perished during one of the darkest chapters in world history, and it is unfathomable that Facebook allows itself to be used as a vehicle to perpetuate such a blatant distortion of what took place during the Holocaust". "It's fake news when they say it didn't happen", Whoopi said. Just as Facebook does not allow posts that espouse violence, it should not allow users to defend the most horrific genocide in our history: the Holocaust.
The social network said it is partnering with local organisations and authorities adept at identifying when posts are false and likely to incite violence.
[Interviewer interjects:] In the case of the Holocaust deniers, they might be, but go ahead.
"I find [Holocaust denialism] deeply offensive".
In the interview with tech blog Recode, Mr Zuckerberg said he was Jewish and personally found it offensive to deny the Holocaust but he did not think Facebook should delete people's views.
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"It's hard to impugn intent and to understand the intent", Zuckerberg responded.
The comments caused a storm of protest. But that doesn't mean that we have a responsibility to make it widely distributed in News Feed.
"Because of his financial powers, he just does a bit of tinkering without understanding how this material could inspire insane people to firebomb synagogues, mosques or churches".
Zuckerberg brought up an example that he said hits closer to home.
LEWIS JOLY/VIVA TECHNOLOG/SIPA/NewscomFacebook CEO Mark Zuckerberg is drawing criticism on social media for defending his company's policy of letting cranks operate on the platform.
"I enjoyed our conversation yesterday", he said in an email to the reporter, published on the Recode site. "Everyone gets things wrong". It comes as Facebook's approach to content moderation has come under scrutiny, as the social network works to clarify what is and isn't allowed on the platform as it continues to combat fake news - raising questions over Facebook's role in the spreading of information.
Earlier this month, India's government rebuked the Facebook-owned messaging service WhatsApp for allowing rumors and false reports to circulate on its service after a series of deadly attacks on victims mistakenly accused of kidnapping children, according to Dow Jones.