ACLU: "Should You Buy a Ring Doorbell Camera?"
This article presents a number of good, important issues with these devices. And to be clear on my position: no, you absolutely should not buy a Ring camera.
In my LibrePlanet 2017 talk, I asked surveillance camera owners to make sure that they are only recording their own property, not sidewalks or streets and such. Ring wasn't a thing back then, and it all but ensures that you capture passerbys (unless your doorbell isn't visible from the street). Now I consider it one of our greatest practical privacy threats.