Activists on social media are wondering, who is this guy? Some call him a "citizen journalist" while others think he is a cop. What is for sure is that if he is a reporter then somebody has a journalist embedded with the federal police units in Portland taking pictures of protesters and they are not sharing his work online, which kind of defeats the purpose of having a reporter there at all. We think he probably works for one of the agencies involved and is not a journalist at all. Technically he could be from any one of several agencies including the Department of Homeland Security, Federal Protective Service, U.S. Marshals, or Customs and Border Protection all of which have been noticeably active guarding the courthouse. We believe based on his attire that he is probably a U.S. Marshal, but we are not sure and his build raises doubts as well as his function as a photographer.
U.S. Marshals in Oregon are well known for wearing khaki cargo pants identical to the pants in the photo. They typically wear them when doing some sort of field work such as transporting prisoners from the Multnomah and Columbia County jails to the Federal Detention Center (FDC) in Sheridan or at the Oregon Air National Guard base at Portland International Airport where the Bureau of Prisons drops off inmates for transport via Con Air. They also started wearing them when taking inmates to and from court and in the courtrooms when the court stopped making them wear suits in the courtrooms.
Most people probably would be surprised to see the way the Marshals dress sometimes because they usually look quite casual. Often they show up wearing t-shirts, khaki cargo pants, and hiking boots, but the shirts usually have some sort of U.S. Marshals insignia, but they probably ditch that in the field when they don't want people to know who they are working with.
If he is with the Marshals then he is the skinniest male U.S. Marshal that we have ever seen. Usually their men are pretty stocky, while this guy has no noticeable muscles whatsoever. It could be a woman, they have some pretty manly looking gals working for them too. The last possibility would probably be the FBI. The Portland FBI Field Office employs some shockingly young small skinny dudes and their job is to investigate criminal complaints, so it would make sense for them to want to embed an agent to take photos even if the FBI is not charged with guarding the courthouse at all.