“This was the first fire that set off a string of fires and looting throughout the precinct and the rest of the city,” Sgt. Erika Christensen wrote in a search warrant affidavit filed in court this week. “Until the actions of the person your affiant has been calling ‘Umbrella Man,’ the protests had been relatively peaceful. The actions of this person created an atmosphere of hostility and tension. Your affiant believes that this individual’s sole aim was to incite violence.”

…A subsequent investigation revealed the man was also an associate of the Aryan Cowboy Brotherhood, a small white supremacist prison and street gang based primarily in Minnesota and Kentucky. Several of its members were also present at the Stillwater incident.

Andy Shoemaker, a former St. Paul police officer who has investigated criminal motorcycle gangs, said the Aryan Cowboys are relatively new with loyalties to the Hells Angels, who operate across the state.

“They’re another group that’s basically a farm system, a minor league for the Hells Angels,” he said, adding the Angels occasionally recruit members from some of these offshoot clubs.

Star Tribune