Facebook has announced it will now ban content related to white nationalism.
The move comes as the social network broadens its definition of hate speech following the mosque attack in New Zealand and pressure from civil rights groups.
White supremacy was already banned by the company, but it had not restricted white nationalism and separatism in the same way because of “broader concepts” such as American pride and Basque separatism, Facebook explained.
The social media platform has decided that it can no longer separate the two from white supremacy and found overlaps in its own review of hate figures and organisations.
"Going forward, while people will still be able to demonstrate pride in their ethnic heritage, we will not tolerate praise or support for white nationalism and separatism," the social network said in a blog post.
The ban will come into force from next week, covering all forms of praise, support and representation for both ideologies, across Facebook and Instagram.
Facebook, which has been criticised for its handling of hate speech, admitted that it needs to act better and faster in response to the problem.
The firm has largely relied on machine learning and artificial intelligence to detect offending material.
Anyone searching terms associated with white supremacy will now be directed to advice from Life After Hate, a non-profit organisation that aims to help people leave hate groups.
"Unfortunately, there will always be people who try to game our systems to spread hate," Facebook said.
"Our challenge is to stay ahead by continuing to improve our technologies, evolve our policies and work with experts who can bolster our own efforts."
American civil rights advocacy organisation Color of Change said that it hoped Facebook's actions would encourage others such as Twitter, YouTube and Amazon to do more to tackle the growth of white nationalist ideologies, which it says inspired the attacks in Charlottesville, Pittsburgh, and most recently Christchurch.
"For years, we've been pressuring Facebook to address the growing dangers of white nationalism and separatism," it tweeted.