(Portland, OR) -- Mayor Ted Wheeler is calling on the Department of Homeland Security to remove federal officers from Portland's streets. Wheeler says he spoke with the Acting Secretary of Homeland Security, who reportedly asked the mayor how his agents could help quell ongoing violence during demonstration activity in Portland. Wheeler says he told the acting secretary that Portland doesn't need or want the federal officers' help and that the best thing they can do is stay inside their building or leave Portland altogether. Wheeler added that his "biggest immediate concern is the violence federal officers brought" to Portland's streets in recent days and the "life-threatening tactics" they use. The comments come just days after a protester was shot in the head by a federal police projectile. Donovan LaBella remains hospitalized with serious injuries.