Oregon’s “red flag” law was the reason a former Marine’s guns were confiscated last week. Shane Kohfield, 32, wasn’t charged with a crime, but he surrendered his firearms including an AR-15 rifle.

According to the Oregonian, Kohfield told a crowd demonstrating in front of the Portland Mayor Ted Wheeler’s home last July, “If Antifa gets to the point where they start killing us, I’m going to kill them next. I’d slaughter them, and I have a detailed plan on how I would wipe out Antifa.” Kohfield was wearing a “Make America Great Again” baseball cap and had a large knife strapped to his shoulder.

Kohfield’s threat was reported and prompted the FBI to take action against him, including a temporary seizure of his firearms under the new red flag law.

Kohfield, who served two tours in Iraq, was also committed to a veteran’s hospital in Portland for 20 days. He is also barred from participating in Proud Boys protests.

The ex-Marine told the Oregonian that he did not plan on harming anyone, but he understood why he was committed to the hospital and prohibited from protesting with the Proud Boys. “I looked unhinged,” Kohfield said. “I looked dangerous and have the training to be dangerous.”

Medical records show that Kohfield suffers from post traumatic stress disorder and bipolar disorder. Kohfield’s father told the Portland police, “I can’t say that he won’t kill someone.” The court documents read, “(Kohfield’s father) provided that Shane was really upset by Portland’s ‘liberal government’ and the state of the federal government.”