Facebook’s CEO Mark Zuckerberg is working on stopping fake news from spreading on the popular social media website. Outlined in a Facebook post, Zuckerberg reveals plans on releasing new systems to stop misinformation including: third-party verification services, automated detection tools and easier ways for Facebook users to report fake news stories.

“The problems here are complex, both technically and philosophically,” Mr. Zuckerberg wrote. “We believe in giving people a voice, which means erring on the side of letting people share what they want whenever possible.”

Following Donald Trump’s Presidential victory, many people accused Facebook for swaying the election by allowing for fake news stories to go viral on the platform. Zuckerberg called the belief “a pretty crazy idea.” Facebook’s CEO later explained that less than one percent of the news posted on the website was fake.

Even President Obama called out Facebook for the spread of fake news stories on their website. During a news conference in Berlin on Thursday, Obama called out the problem with misinformation spreading on Facebook and in the media.

“Because in an age where there’s so much active misinformation and its packaged very well and it looks the same when you see it on a Facebook page or you turn on your television,” Obama said. “If everything seems to be the same and no distinctions are made, then we won’t know what to protect.”

During the last three months of the election, Buzzfeed reports that fake news stories led to nearly 9 million shares, reactions and comments on Facebook. In addition, a large majority of those fake news stories were in support of Donald Trump and attacked Hillary Clinton. In fact, the most shared fake news story circulated on Facebook was a false story titled “Pope Francis shocks world, endorses Donald Trump for President”. That single story had 960,000 shares.

According to Paul Horner, the owner of the fake news site reported earning an estimated $10,000 a month in advertising revenue from Facebook and Google. In an interview with the Washington Post, Horner explained, “I think Donald Trump is in the White House because of me.”

Horner went on to explain, “My sites were picked up by Trump supporters all the time. I think Trump is in the White House because of me. His followers don’t fact-check anything — they’ll post everything, believe anything. His campaign manager posted my story about a protester getting paid $3,500 as fact. Like, I made that up. I posted a fake ad on Craigslist.”

Update: Facebook will ban advertisers from using “ethnic affinity” targeting.

After a backlash by civil rights groups, Facebook users, Congressional Black Caucus and other U.S. lawmakers, Facebook has announced they will no longer allow users to use “ethnic affinity” to target users by their ethnicity.

“Recently, policymakers and civil rights leaders have expressed concerns that advertisers could misuse some aspects of our affinity marketing segments,” Erin Egan, Facebook’s vice president of U.S. public policy and chief privacy officer, said in a blog post. “Specifically, they’ve raised the possibility that some advertisers might use these segments to run ads that discriminate against people, particularly in areas where certain groups have historically faced discrimination — housing, employment and the extension of credit.”

The Congressional Black Caucus has taken a stand against a Facebook advertising feature, Ethnic Affinities, which allows for businesses to exclude ethnic groups and races from receiving housing advertisements. Lawmakers argue the Facebook advertising program is a violation of anti-discrimination housing laws.

In an open letter addressed to Facebook’s CEO, the Congressional Black Caucus write they are concerned about the “Ethnic Affinities” advertising feature.

“We are writing to express our deep concerns with reports that Facebook’s ‘Ethnic Affinities’ advertising customization feature allows for advertisers to exclude specific racial and ethnic groups when placing housing advertisements.”

The Caucus added, “This is in direct violation of  the Fair Housing Act of 1968, and it is our strong desire to see Facebook address this issue immediately,” reads the letter.

However, Facebook responded to the lawmakers by arguing that this type of advertising is commonplace in the advertising industry.

“We’ve heard from groups and policy makers who are concerned about some of the ways our targeting tools could be used by advertisers. We are listening and working to better understand these concerns.”

The Facebook feature is called “Ethnic Affinities” and it lets advertisers posting ads for an apartment or house to target certain races and ethnic groups and exclude others.

It is important to point out that the Fair Housing Act of 1968 makes it illegal to “make, print, or publish, or cause to be made, printed, or published any notice, statement, or advertisement, with respect to the sale or rental of a dwelling that indicates any preference, limitation, or discrimination based on race, color, religion, sex, handicap, familial status, or national origin.”

This news comes after Facebook announced their quarterly earnings. Current estimates suggest Facebook is on track to earn $27 billion in revenue this year. So far, in the company’s third quarter the social media giant was able to increase by 56% and earn $2.38 billion. However, Facebook’s Chief Financial Officer Dave Wehner said that the advertising growth will eventually “come down”. But, the company plans to increase engagement, users and time spent on the app by adding additional video features.