Social media link to attacks poses conundrum

Coming together for the common good: The EU has enlisted the help of major tech and social media companies like Google, Facebook, Twitter and Microsoft in the fight against online extremism.

SAN FRANCISCO: Pressure is growing on social networks to play a bigger role in finding and weeding out jihadists and others looking to recruit members and plot deadly attacks. 

But it’s more complicated than it sounds: networks like Facebook and Twitter support free expression, and filtering our bad actors is challenging both from a technical and civil liberties perspective.