I understand why the sidewalk gets used for bikes, the street is terrifying. That's no excuse for bad manners. Bikes on the sidewalk should be walked or riden no faster than a walk and with plenty of bell ringing.
Get involved with the future plans. http://www.trans.ci.portland.or.us/Projects/Hawthorne/default.htm Don't be too skeptical of getting involved with city planning. It works, sometimes its hard, but you can make a difference, as in the reservoirs are still on Mt Tabor.
Hawthorne, the street, needs some major overhauling.
1 - It's too narrow for 4 lanes of cars. Reduce to 2 car lanes, and 2 GOOD bike lanes.
2 - Sidewalks too narrow. Use some of the freed up space to widen sidewalks.
3 - Sidewalks too ugly. Plant more trees. Place some benches.
4 - Too damn smelly and noisy from traffic. Whatever happened to electric steetcars?
5 - Parallel parking is dangerous and annoying. Use some of the freed up space to create BACK-IN angle parking. It is easier than parallel and MUCH safer when re-entering traffic.