Twitter is always in the hot controversies for the abuse people throw there. With each successive day it release some or the other feature to stop offensive content. Few of them are : Allowing people hide replies, Let user control who can reply to their tweets.
Twitter is planning to introduce a new feature “Toggle”. this hint has been given at the Analyst day presentation. It will enable the user to on the new “Safety mode”. It will automatically block accounts that appear to break any twitter rule. Muting accounts that are using insults, name-calling.
Source : Mint