But the report was critical of Facebook’s handling of speech — particularly speech from politicians — and the effects on users. The auditors said Facebook had been too willing to exempt politicians from abiding by its rules, allowing them to spread misinformation, harmful and divisive rhetoric, and even calls to violence.
The auditors said their concerns had increased over the past nine months because of decisions made by Mr. Zuckerberg and Nick Clegg, Facebook’s global head of policy and communications.
Their concerns were exacerbated last fall, when Mr. Zuckerberg delivered a speech at Georgetown University about his commitment to protecting free speech at all costs. Since then, the report noted, Facebook had refused to take down inflammatory posts from President Trump and had allowed untruthful political ads to be circulated.
“Elevating free expression is a good thing, but it should apply to everyone,” the auditors wrote. “When it means that powerful politicians do not have to abide by the same rules that everyone else does, a hierarchy of speech is created that privileges certain voices over less powerful voices.”
They added, “The prioritization of free expression over all other values, such as equality and nondiscrimination, is deeply troubling.”
In a series of recommendations, the auditors said Facebook needed to build a more robust civil rights infrastructure. They added that Facebook needed to be consistent in its policies and its enforcement, including “more concrete action and specific commitments to take steps to address concerns about algorithmic bias or discrimination.”
Facebook has pledged to make some commitments in response to the audit. In the report, the company said it would create a role for a senior vice president of civil rights leadership that will report up through the legal department and ultimately to Ms. Sandberg. Facebook also promised to develop new internal processes that support the civil rights of users, across its product and policy teams.