Facebook has lost more than a dozen advertisers after a campaign drew attention to pages on the social media site that promoted violence against women.
Women, Action and the Media launched the campaign last week to get Facebook to end hate speech on its site and urged advertisers to pull their support.
The content included pages and images that had photos of abuse, and words that encouraged rape, abuse and other violence against women.
The campaign led to more than 5,000 emails to Facebook advertisers and more than 60,000 posts on Twitter. Nissan and a number of other smaller advertisers responded by pulling ads.
Facebook said that its systems failed to work effectively to identify and remove the hate speech and will remove the content and improve its efforts.