I’ve long thought something similar about that Mark Harmon show, NCIS or whatever it is. I’ve seen at least a half dozen episodes (involuntarily, I assure you), and each featured a situation where the Good Guys were attempting to investigate some heinous crime and somebody with a strong concern for civil-liberties and/or due process was getting in their way. That somebody was always mocked, ridiculed, and eventually shown to be completely wrong or in some way corrupt.
It always struck me as a very un-subtle way to soften popular objections to shady law enforcement practices.