Portland, Oregon, Mayor Ted Wheeler condemned the actions of rioters who he says are “attempting to commit murder."

He also warned the violent demonstrators that they are helping President Trump’s campaign.

Portland Mayor Ted Wheeler (D) on Thursday condemned the violence that recently convulsed his city, stating demonstrators are “attempting to commit murder” following an attack on East Precinct, where violent left-wing agitators attempted to set it ablaze.

“When you commit arson with an accelerant in an attempt to burn down a building that is occupied by people who you have intentionally trapped inside, you are not demonstrating, you are attempting to commit murder,” Mayor Wheeler, who has remained relatively soft on demonstrators — even joining them last month — said.

PORTLAND, Ore. (AP) — Portland’s nightly protests turned violent again even after the city’s mayor pleaded for demonstrators to stay off the streets and a police officer hit by a rock early Friday suffered what was described as a serious injury.

The protesters who came out Thursday night clashed with officers near a police precinct station and also used metal bars to disable police vehicles, police said in a statement.