There was a camera-spotting movement in Belgium some years ago. Basically people started marking all known cameras on a map. I think people gave up once they realized the sheer impossible scope of it.
Most cameras are too high up to reach anyway. A can of spray paint on a stick might be more effective, but that will almost certainly lead to vandalism charges.
Most cameras are too high up to reach anyway. A can of spray paint on a stick might be more effective, but that will almost certainly lead to vandalism charges.