They probably have gotten a lot of practice. I wouldn't be surprised if there are a lot more of these videos of individuals like the ones we are seeing that haven't been aired.  Also, they're easy targets.  They are so proud of what they are doing that they walk right into the trap.  They can't help but brag about it.  They want to show off how they are contributing. "I'm important because I've done X, Y and Z. I'm brave because I'm breaking the rules and could get in trouble or lose my job." Not really thinking about possible legal ramifications. But then again, they think they can get away with it because everyone else is doing it too and nothing has happened to them.