Sites like Facebook, Google and Twitter allowed white supremacists to flourish. Now what?

Photo: Agency

Before walking into a Norwegian mosque with a pair of shotguns earlier this month, Philip Manshaus called for a race war in a statement he posted on the dark reaches of social media.

He couldn’t go to 8chan, the renegade message board where suspects in three recent mass shootings had uploaded white nationalist screeds. That board had been booted days earlier by its internet provider, after the man suspected of killing 22 people in an El Paso Walmart posted his own hate-filled manifesto.

It wasn’t hard for Manshaus to find a megaphone, though. The 21-year-old – whose Aug. 10 attack was foiled when a worshiper tackled him – posted on a little-known board called endchan.

Much attention since the El Paso shooting on Aug. 3 has focused on 8chan. But white supremacists remain active all across the web – including on the biggest social media sites, where they proselytize in plain sight. Attempts to curb racist and violent views on the internet have become serious only recently, with limited success.