Illustration: Sarah Grillo/Axios
Twitter on Friday permanently banned former Ku Klux Klan leader David Duke for violating the platform's rules on hate speech, AP reports.
Why it matters: The Anti-Defamation League describes Duke as "perhaps America's most well-known racist and anti-Semite."
- It's not immediately clear which tweets triggered Duke's account to be banned. He was banned from YouTube in June.
- Twitter revised its code of conduct in March, prohibiting posts that promote violence or threats of violence against people based on their religion, race or ethnic origin.
The big picture: Social media companies have been under fire from big-name advertisers for not doing even to combat hate speech and misinformation on their platforms.