The Brief A 77-year-old resident is staging weekly protests against St. Petersburg Flock cameras, arguing the automated license plate readers infringe on privacy. St. Petersburg police utilize about 50 of the cameras across the city to track missing persons and investigate active crimes. A retired Florida resident is spending his weekends raising awareness about automated surveillance by protesting outside St. Petersburg Flock cameras. St. Petersburg Flock cameras protestWhat we know:Every Saturday, 77-year-old Carl Gunn sets up beneath a different camera with a homemade sign attached to a nearly 10-foot pool skimmer. Police camera data collectionBy the numbers:St. Petersburg police report that roughly 50 Flock cameras are currently installed throughout the city.