The Brief Dallas police have used Flock license plate cameras as vital safety tools, despite 25 recent cases of vandalism. Some local advocacy groups and lawmakers believe the Flock cameras used by police to track wanted criminals are an invasion of privacy. Flock Cameras in DallasWhat we know:There are approximately 670 Flock cameras located all across Dallas. The Dallas Police Department said it does not track the number of arrests specifically related to the use of Flock cameras. And you have the same relationship, arguably developing, where law enforcement is getting information, but nobody stopped to pass on it.