The site was forced to clarify its position after it initially appeared to suggest the videos, retweeted by Trump from the account of Britain First deputy leader Jayda Fransen, were not removed because they stoked debate.
To be sure, Twitter does not explicitly mention the alt-right or neo-Nazi groups in the rules it first previewed in November.
A far-right British activist who gained prominence after President TrumpDonald John TrumpHouse Democrat slams Donald Trump Jr. for "serious case of amnesia" after testimony Skier Lindsey Vonn: I don't want to represent Trump at Olympics Poll: 4 in 10 Republicans think senior Trump advisers had improper dealings with Russia MORE retweeted her anti-Muslim tweets in November had her Twitter account suspended on Monday as part of the social network's effort to crack down on hate speech.
Austrian far-Right sworn in to government amid protests
Hartwig Löger, chief executive of insurer UNIQA Austria, has been named as the country's next finance minister. Kurz has the intention of being an active partner in Europe, and I am glad of that.
The Britain First retweets kicked off a diplomatic storm between the United Kingdom and USA, with prime minister Theresa May directly criticising the president.
Twitter did not immediately respond to emails seeking comment on Sunday. Trump later criticised her back on Twitter.
"You also may not affiliate with organizations that - whether by their own statements or activity both on and off the platform - use or promote violence against civilians to further their causes", the policy says.
United Kingdom police respond to 'significant incident' at RAF base
Britain's Ministry of Defence said it was aware of an incident at the base and that police were taking a lead in the case. A US Air Force spokeswoman confirmed the incident had been "contained" and that a suspect had been apprehended.
Late last month, after Trump retweeted three of Fransen's videos, White House press secretary Sarah Huckabee Sanders told reporters that his action was meant to "elevate the conversation" about the issues of "extreme violence and terrorism". As the platform rolled out new features such as longer tweets and the ability to "thread" posts, some users were exasperated that the company wasn't also making moves to combat abuse and harassment by its users.
In a blog post published Monday, Twitter said it was to enforce new rules about hateful conduct and abusive behavior.
Twitter has always been criticized as an avenue for abusive language and behavior online. We will begin enforcing this rule around affiliation with such organizations on December 18, 2017. Fransen's suspension was joined by Paul Golding, the head of Britain First - who was recently arrested on account of verbal threats. The implementation of the rules has resulted in a purse of far-right accounts, including alt-right leaders and white nationalists.
Aconex Ltd shares set to rocket on Oracle's $1.6 billion takeover offer
The Melbourne-headquartered cloud collaboration provider for construction firms has a market capitalisation of A$1.06 billion. It has offices in 30 countries and says it has managed over $1tn in construction projects.