After 10 people were killed in the Toronto van attack, a Facebook post surfaced from accused killer Alek Minassian, citing the “Incel Rebellion.” Incels, or “involuntary celibates,” are just one of a group of anti-feminist online subcultures that make up the manosphere.

Xtra reporter Arshy Mann began immersing himself in the online manosphere years ago. He says we need to understand these groups and take them seriously.

Read Arshy’s piece on the manosphere in Xtra here.