A (car) motorist crashed into my 5-year old son while he was riding his bicycle through a cross-walk (legal here). She had a stop-sign and failed to look right

A (car) motorist crashed into my 5-year old son while he was riding his bicycle through a cross-walk (legal here). She had a stop-sign and failed to look right to see him before plowing forward. She ran over his bike, but he was knocked back and escaped with only bruises and scrapes. He had clear right-of-way. Cyclists (the less considerate ones) can be unpredictable and frustrating for cars - I appreciate that. But "Get off the roads!" is only a very small part of the issue. Respect, training, and consequences commensurate with the level of damage inflictable by cars is something very absent from US driving culture (especially where I live in the relatively rural northwest). Cyclists whether on the road, bike paths, sidewalks, etc. kill and seriously injure people with negligible frequency compared to cars per mile.