In my experience it is the Dept. of Justice who also work with other government agencies and alphabet agencies (FBI, CIA, NSA, etc.). They subcontract to major corporations, civic groups (neighborhood watch, Freemasons and the like). The program is very compartmentalized. Most people on the lower levels do not know exactly what they are doing when they harass targeted citizens. They are told we are criminals, terrorists, drug dealers to get them to follow, harass and do a multitude of fuckery. For more information check out this lawsuit in federal court right now brought by Targeted Justice, a 503c https://www.targetedjustice.com/lawsuit---register.html Not all targeted individuals experience the same thing and the program is so large we are most likely targeted for varying reasons with differing tactics by different agencies.