Cameras are great. Especially with diverse ownership.
Police can walk about, ask or order (warrant) for footage.
A network of AI powered cameras linked to the hive mind controlled by real life super mega evil corp inc run by real life super villains... not so great.
Also the 4th amendment is a thing. Mosaic theory is a thing.
Enough of these flocking cameras.
I don't think that police should be allowed to ask camera owners to voluntarily hand over footage, even if they would be willing to. That just allows them to privatize the mechanism of surveillance, similar to using data brokers to get around warrant requirements. Instead, I think that even where camera owners would willingly hand over footage, the state should still be required to obtain a warrant for said footage in order to preserve legal safeguards around evidence collection.