I enjoy some of these shows myself but it is sometimes crazy how blatant they are about it.
The name "Law & Order" is a blatant example of this, as it's a phrase used by Richard Nixon during his campaign in 1968, and was widely repeated when he created justifications for starting the War On Drugs in 1970. This same phrase was later used by Reagan and H.W. Bush when they planted their positions of wanting to wield state violence against countercultures that arose. The '90s was full of change as Gen-X started to become adults and formed their own powerful countercultures, and the title of the show was an emotional appeal to conservative older people who hated that change and wanted the state to shape society instead of the other way around.
So even the ones that try to buck the trend end up following it.
They went from exposition of “tv reality” to making a weird case that both cops and prosecutors must cut corners and push the envelope. The weird part is they gloss over the futility. But as you said, the old people get the message that we need to do more.