After the presidential election last year, the Proud Boys, a far-right group, declared its undying loyalty to President Trump.In a Nov. 8 post in a private channel of the messaging app Telegram, the group urged its followers to attend protests against an election that it said had been fraudulently stolen from Mr. Trump. “Hail Emperor Trump,” the Proud Boys wrote.But by this week, the group’s attitude toward Mr. Trump had changed. “Trump will go down as a total failure,” the Proud Boys said in the same Telegram channel on Monday.As Mr. Trump departed the White House on …
