SAN FRANCISCO — One morning in October, the editors of Página Siete, Bolivia’s third-largest news site, noticed that traffic to their outlet coming from Facebook was plummeting. The publication had recently been hit by cyberattacks, and editors feared it was being targeted by hackers loyal to the government of President Evo Morales. But it wasn’t … Continue reading In Some Countries, Facebook’s Fiddling Has Magnified Fake News