On the sidewalk. Bike are too slow and unsafe for streets. They slow down drivers and make drivers nervous. Motorized vehicles are more important than bicycles.
On the street. Bicycles are vehicles and cyclists ought to behave like it and follow all the rules of the road.
Nowhere. Cyclists are arrogant jerks who clog up the city's transportation system.
Whereever they want because bicycles (a) make people healthier and relieve the healthcare system, (b) are the most energy-efficient mode of transport and reduce pollution and climate change, (c) don't wear down roads nearly as much as motorized vehicles,