"Artemis" has put up flyers in neighborhoods around the city that list people living in the area who receive benefits under the federal Supplemental Nutrition Assistance Program -- commonly known as food stamps -- KPTV, Portland, reported Tuesday.
Officials say the flyers have appeared mostly in upper-income areas.
"There are 27 people in this neighborhood who vote and receive food stamps," one note read. "The names of these people are being posted where they can be seen by taxpayers and the neighborhood can decide who is truly in need of food."
A few weeks ago, similar flyers identified people receiving disability benefits, describing them as "a threat to the Republic." Police investigators say that message could be considered hate speech.
Few Portlanders appear to sympathize with Artemis, the TV station said.
"The weaker people in our society, a good culture takes care of them, they don't degrade them," said River Gibeaut, who spotted the flyers as he walked his dog Tuesday.
Artemis is a figure in Greek mythology -- the sister of Apollo and goddess of the hunt, wild animals, childbirth and virginity. The pet Homer called her "Artemis of the wildland."