If you are unaware of their story I have posted an article below. I might compile a list of the positive changes that happened as a result of this case.
https://nypost.com/2021/01/21/twitter-sued-for-allegedly-refusing-to-remove-child-porn/
https://nypost.com/2021/01/21/twitter-sued-for-allegedly-refusing-to-remove-child-porn/