Christchurch Call

The Prime MinisterJacinda Ardern is due to meet the leaders of global tech giants including google, Facebook and twitter to eliminate terrorist and violent content online, in Paris. The summit has been dubbed the Christchurch Call and leaders present include, France's Emmanual Macron and Germany's Angela Merkel. Computer expert Alisatair Knot of the University of Otago explains what needs to happen in the technical field to prevent the spread of objectionable material on social media.