They flashed Nazi salutes in February outside the Minneapolis Institute of Arts.
They've mixed it up on message boards like that of The Daily Stormer, a prominent white supremacist website, and through secure online chat apps, too.
And on a blog called AltRightMN, which shows about 4,400 visits since starting up early this year, they've claimed to have recruited a network of followers to wage a battle defending "racial reality, religion, white identity, and nationalism."
Well before the chaos and killing in Charlottesville, Va., put them in the national spotlight, far-right activists were making their presence known in less conspicuous ways in Minnesota. But their reach is difficult to gauge, in part because Minnesota has been less fertile territory for hate groups than other states, and also because those who are here tend to mobilize under the cover of darkness.
"People have this stereotype that it tends to be more in Southern areas or rural areas, but that's not actually true," said Lisa Waldner, a University of St. Thomas professor who has tracked domestic hate movements. "We find it all over the country."
Former U.S. Attorney Andrew Luger said the violence in Charlottesville "brought to the national consciousness" activity he and other officials have long monitored locally.
Last year, Luger prosecuted the nation's biggest case of would-be ISIS recruits but also targeted hate crimes and led talks on Islamophobia and anti-Semitism. Now in private practice, he is preparing to announce his next foray into counter-extremism work, adding that Charlottesville has underscored the need for more proaction in preventing radical violence.
"What are we going to do about this?" he asked.