In September, Twitter started testing a feature called Safety Mode that allowed users to automatically block abusive or spam replies.
After receiving feedback from beta users, Twitter is now giving more users across English-speaking markets access to the feature. Safety Mode will now be available to around 50% of users in the U.S., U.K., Canada, Australia, Ireland and New Zealand.
https://twitter.com/TwitterSafety/status/1493669586666930181