Mark Zuckerberg posted a lengthy message Wednesday night, responding to the president's tweet claiming, "Facebook was always anti-Trump."
"Trump says Facebook is against him. Liberals say we helped Trump," Zuckerberg wrote. "Both sides are upset about ideas and content they don't like. That's what running a platform for all ideas looks like."
The Facebook CEO noted that he regrets dismissing the idea that "misinformation on Facebook" could have changed the outcome of the 2016 presidential race.
"This is too important an issue to be dismissive," Zuckerberg added.
During the election, many people raised concerns that the social media platform was spreading false information. Recently, the company has faced increased scrutiny after revealing that it sold roughly 3,000 Russian-linked ads during the election.
But despite the ads, Zuckerberg argued Facebook also played a positive role in the election by encouraging people to vote, connecting candidates with voters and helping "as many as 2 million people register to vote."
Zuckerberg vowed to continue building an online community for all people.
"We will do our part to defend against nation states attempting to spread misinformation and subvert elections," he wrote. "We'll keep working to ensure the integrity of free and fair elections around the world, and to ensure our community is a platform for all ideas and force for good in democracy."