Supporters of bank note campaigner Caroline Criado-Perez have helped launch a hashtag campaign under #takebackTwitter, over claims the social media network is failing to deal with threats of sexual abuse made on its site.
#takebacktwitter I agree, better report system is needed. Too many times I have wanted to report something it's too long winded to even try
More top news
Stephen Hawking said a Brexit would make Britain more "isolated and insular".
Michael Gove and Boris Johnson are increasingly behaving like an opposition party at a general election.
At least 17 people trapped inside an ammunition depot in India when a fire broke out are feared to have died.