No, not Antifa.
Via Free Beacon:
Portland’s Democratic mayor Ted Wheeler—who this summer said he’d let violence from leftist protesters “burn itself out”—blamed “concerns” over election-week unrest on white supremacist groups.
“Given the heightened concerns about potential violence, particularly from white supremist [sic] organizations and the divisive rhetoric from Washington, D.C., the need for coordination and partnership takes on statewide significance,” Wheeler tweeted on Monday. “Oregon is likely to be a flashpoint.”