Heck, I am alive now (sort of, I guess) and I don't get Firefly. But ... that's because I'm part of the Lone Ranger generation rather than the Firefly generation. I also don't get anything out of Matrix. Tried to watch the original, found it confusing and boring, and turned it off.
It's clearly a generational thing.
It seems to me that the Lone Ranger and other shows in the 50's always had that Law and Order theme and Respect for Legal Authority theme also. I watched reruns as a very little kid, but not long after. I vaguely remember there was a "code", but I couldn't tell you anything about it.
Many if not most of the shows I can think of growing up usually portrayed the law or govt as either evil, corrupt, or incompetent in some way with the outlaw as the good guy. I am thinking of BJ & the Bear, Dukes of Hazzard, and A-Team.
When were shows like Alias Smith and Jones on TV? There were others of a similar theme.