

Youtube varies from genuinely good content, to generic filler, to complete and utter trash, and there is much of the latter two because it’s not curated by anyone (other than by algorithms).
Try “We Own This City” from David Simon, if you want a documentary on the police that isn’t propaganda.
This seems like a “why not both” situation. Limit e-bike speeds to those that are typical in most parts of the world and reduce city speed limits for cars to 20mph, and enforce it aggressively.