Live-streaming of attacks a challenge for social media

Washington

AS more gruesome crimes and attacks show up on live online video, social media platforms are facing new challenges on preventing the spread of gruesome and horrific content.

The challenge was underscored in Monday's deadly attack on a policeman and his wife in France in which the killer posted on Facebook a live 13-minute video of himself with the victim's child in which he admitted the murders and urged fellow jihadists to carry out more bloodshed.

Platforms such as Facebook and Twitter have been promoting their new live video features, but are struggling to find ways to ke…