Platforms like Facebook and Twitter have been promoting their new live video features, but are struggling to find ways to keep out content that promotes violence. But social media groups are capable of doing more to prevent and remove horrific content from being streamed worldwide, said Mark Wallace, chief executive of the Counter Extremism Project. Wallace said social networks have already implemented systems that filter child pornography, and could do the same for other violent acts. "There is technology to do that now," he told AFP. "It's a question of will, not technology."