On Sunday, members of the Antifa movement in Portland, Oregon held a remembrance event for an activist that was killed. During their demonstration, they vandalized Oregon's Democratic Party headquarters.

Named "Light The Sky For Sean," Antifa used flares and fireworks in honor of 23-year-old Sean Kealiher, who was killed in a hit-and-run near a popular pub for members of Antifa.

Kealiher was well-known member of the group and Rose City Antifa said, "Our sources indicate that this was not related to fascist activity."

During their demonstration over the weekend that went into the early morning hours on Monday, rally-goers spray painted anarchist symbols on the Oregon's Democratic Party headquarters. One person climbed ledge and spray painted over the American flag that was on the building.

Antifa also chanted "All cops are b*stards."

Police has are investigating Kealiher's death as a homicide, according to KATU.

"Detectives will examine evidence we have now, talking to witnesses, seeking witnesses, and trying to get more information from them, not only about what happened at the scene of the crime, but what led up to it," said Sgt. Kevin Allen, a spokesperson for the Portland police.