Law enforcement officials in Minnesota believe there are white supremacists attending demonstrations in the Twin Cities of Minneapolis and St. Paul, said Department of Corrections Commissioner Paul Schnell on Sunday night.

“They’re agitators,” he said, adding that authorities are trying to break up groups so “agitators” don’t gather and incite chaos.

He also added that there have been reports of Antifa attending the demonstrations.

Antifa, short for anti-fascists, describes a broad group of people whose political beliefs lean toward the left — often the far left — but do not conform with the Democratic Party platform.