Public Forum: Eyewitness Report from the Middle East, sponsored by Americans United for Palestinian Human Rights and others, part of national tour by Between the Lines magazine coeditors, 7 p.m., SEIU Local 49 NW, 3536 S.E. 26th Ave., donations requested. Call 503-475-7833.
Avon Walk for Breast Cancer, sponsored by Avon Foundation, marathon walks to raise money for breast cancer research, public welcome to encourage participants at the following cheering stations: Salmon Street Fountain, foot of Southwest Salmon Street, 8 a.m. to 9:30 a.m.; Milwaukie City Hall, 10722 S.E. Main St., 11 a.m. to 2 p.m.; old Castle Restaurant building, Southeast River Road at Southeast Glen Echo Avenue, Gladstone, 2 p.m. to 4 p.m. Call 503-381-7801.
St. Johns Window Project opening day, sponsored by Art on the Peninsula and others, local artists exhibit works in neighborhood stores' windows, various locations, event includes music and performances at 7340 N. Philadelphia Ave., 2 p.m. to 6 p.m. Call 503-823-4099.
Education initiative on Buprenorphine, sponsored by Substance Abuse and Mental Health Services Administration, presentation on new drug to treat addiction to painkillers and heroin, 9:30 a.m. to 11:30 a.m., Portland Building, Main Auditorium, 1120 S.W. Fifth Ave. Call 301-443-0294.
Sweet Summer Cycle Ð East Side, sponsored by Portland Office of Transportation, easygoing 6-10 mile bike tour, 6 p.m. to 8 p.m., meet at Lents Park, Southeast 92nd Avenue and Steele Street. Call 503-823-5266.
Sweet Summer Cycle Ð West Side, sponsored by Portland Office of Transportation, easygoing 6-10 mile bike tour, 6 p.m. to 8 p.m., behind Wilson High School, Southwest Sunset Boulevard and Capitol Highway. Call 503-823-5266.