“We call upon the nation’s righteous people to gather at 20:00 on the festive day of Mid Autumn Festival, for a grand crusade against our enemy,” reads a post on Di Ba’s Facebook page.

Di Ba is an online community, estimated to have more than 20 millionmembers. They’re one arm of China’s troll army, ready to attack anyone who may have offended Chinese people in any way, flooding their social media pages with nasty messages.

Their target? A Swedish comedy host.