Who's responsible when a massacre is streamed on Facebook Live? When the media clip it up for broadcast? When people share it? When hate groups have been quietly bubbling up in corners of the internet? This week on DTS: the terrorist attack in Christchurch has raised many questions: about us, the internet and about responsibility. What role does technology and media have in making sure this never happens again? Also IGTV - Instagram's attempt to take on longer-form video platforms like YouTube and even Facebook... is it any good?