Del Harvey, head of trust and safety at Twitter, has said that the company's policy is: "We don't want people to use our platform to do things that are illegal that's not something that we support."
"I think a lot of times people think that we stand on the whole 'Twitter is a platform for free speech - so anything goes' and that's just not the case," she said.
"We do have policies against a lot of harassment ... and a threat of rape or violence is not something that's protected by that sort of concept of anything goes."
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