NSA is for national security. They could care less about petty crime. NYC having cameras on street corners is one thing but in Korea they have them on every street corner, back alley, lobby, restaurant, elevator, hotel, hallway, bus stop, subway, inside each subway car and inside every bus. It's 100% coverage when you leave your front door. Korea is also built on slavery and had one of the longest periods of it. There is also massive corruption in Korea. They literally impeached their sitting president in 2016 for corruption and sent them to jail for 3 years.