Harassment is common wherever you find people who are homeless.  You can find information at www.wraphome.org, www.nlchp. org, and many other sites that deal with homelessness.  There are people in the Eugene streets right now interviewing people regarding their treatment by the police to more systemically document mistreatment.  If you want to see this with your own eyes go hang out at Kesey Square for 24 hours.