This update to the company's policies follows an announcement to the rules last year when Twitter ruled that language that dehumanizes others on the basis of religion would break the rules and be removed.
Now, the hateful conduct policy has expanded to cover similar content on the basis of on age, disability or disease.
Generally speaking, the policy is designed to stop people from actively promoting violence against others based on race, ethnicity, nationality, gender, religion and more. Now that policy has been enhanced to be further reaching.
There’s more to come. We’re continuing to research and partner with a global working group of outside experts to address additional protected categories.— Twitter Safety (@TwitterSafety) March 5, 2020
For more on how we work with outside experts:https://t.co/FTTW6k0DBJ
The policy change also applies retrospectively. This means that Tweets sent before the change can be reported and will need to be deleted. Accounts that have previously Tweeted in this way won't necessarily be suspended though as they weren't breaking the rules at the time.
It's worth noting that Twitter has also said it plans on expanding the policy further in future and like other social media platforms it is constantly striving to battle hate speech.