> Cycling and walking are not inherently dangerous. All danger begins and ends with cars, all harm comes from cars

Come to NYC. You will quickly see that bicycles can and do run into pedestrians, often causing harm. The New York taxi that ran into 6 people recently was struck by a (possibly motorized) bicycle that blew through a a traffic light.

(I suspect that the taxi driver panicked and hit the gas when he meant to hit the brake.)

I recently read that in an average year, one New York City pedestrian is killed by a bicyclist. That's nowhere near as many as cars kill, but it does show that regulating bicyclists is still important.