If your camera records a shared space (a hallway in a condo building, a common driveway), put up a small, unobtrusive sign: "24/7 Video Recording in Progress." This covers you legally (two-party consent) and socially. Informed consent is the best defense.
The most secure home is not necessarily the most surveilled; it is the one where safety and privacy are balanced with respect for everyone who enters the frame. Before installing that next camera, ask not just “Can I?” but “Should I?”
Privacy concerns don’t just stop at your front door; they extend to your neighbors. A camera angled too sharply might capture a neighbor’s backyard or their front windows. This has led to a new wave of "suburban surveillance" friction.