So, just curious; where's the dividing line between "poor government schlub just doing his job" and "Nazi prison guard who knew he was doing evil", assuming you'd agree the Nazi guard is culpable on some level?
Fact is, government employees can choose to work elsewhere. But as a citizen I'm stuck with my government. That's why you won't see much sympathy for law enforcement in these situations.
You're not stuck with your government, you could move elsewhere, probably about as easily as a border patrol employee could find another job.
I don't know where the line is, but it's pretty clear that the customs agent is on the other side if it from the Nazi guard. It's certainly somewhere in between those two.
Fact is, government employees can choose to work elsewhere. But as a citizen I'm stuck with my government. That's why you won't see much sympathy for law enforcement in these situations.