The Proud Boys started as a joke by a former Punk Singer. Punks ideology was based on anti-racist and anti-sexist beliefs, They didn't realize that there was a real audience for their satire and the group was Co-opted by actual racists.

A similar thing happened to the Tea Party which was anti-1%'res which is now controlled by their corporate donors. It's new name is the House Freedom Caucus and they want to default on US debt.