Social Media Are a Mass Shooter’s Best Friend

Forty-nine people are dead and 20 more injured after terrorist attacks on two New Zealand mosques Friday. One of the alleged shooters is a white man who appears to have announced the attack on the anonymous-troll message board 8chan. There, he posted images of the weapons days before the attack, and an announcement an hour before. On 8chan and Twitter, he also posted links to a 74-page manifesto, titled “The Great Replacement,” blaming immigration for the displacement of whites in Oceania and elsewhere. ….[READ]