(Portland, OR) -- Portland's high crime rate is leading some landlords to post signs that say tenants are armed. Residents have been frustrated by a lack of police response to act as a deterrent to crime. Landlords posted signs reading "No Trespassing, Armed Tenants" and "Lethal Force Authorized." The signs aren't in violation of the city's code. Portland Police are understaffed by about 300 officers which has made it difficult for officers to conduct patrols.