Starting Thursday, tweets that Twitter deems to involve matters of public interest, but which violate the service's rules, will be obscured by a warning explaining the violation and Twitter's reasons for publishing it anyway. Users will have to tap through the warning to see the underlying message.
Twitter said the new policy applies to all government officials, candidates, and similar public figures with more than 100,000 followers.
Twitter's rules prohibit threatening violence against a person or group, engaging in "targeted harassment of someone," or inciting others to do so, such as wishing a person is harmed. It prohibits hate speech against a group based on race, ethnicity, gender or other categories, and disallows the threatening or promoting of terrorism.
The company has long exempted public figures from many of its usual rules, contending that publishing controversial tweets from politicians encourages discussion and helps hold leaders accountable.
Twitter's new policy doesn't apply to past tweets.
Twitter said it is still possible for a government official or other figure to tweet something so egregious that it warrants removal. A direct threat of violence against an individual, for instance, would qualify.