Except the data does NOT belong to the government, that's the whole point of Flock operating the way it does. It's not governmental data collection it's data collection by a private company that is then made available to the government upon request. And yeah: it is literally allowed to delete data, because again: it's not a government agency, it's just private data, collected by a private company, with the exact same status as you recording an public intersection with a camera from your window.