Meh, I look at elements of today's pop culture with disdain.
My point wouldn't be whether people look at 'Leave it to Beaver' or 'Father Knows Best' with fondness. My point would be that these were highly stylized views of life, and not representative of reality. Much like the Cosby's was not.
But they do indicate what people are watching and what they like. Those who observed that standards were being lowered indicated that people wanted more sex, violence, and a generally cynical outlook on life - that could be cited as evidence of moral decline.
As a quick example of what I mean;
In Frank Bank's autobiography, he claims to have slept with over 1000 women, and to have lost his virginity at 12.
Lauren Chapin drank, and ran away from home after Father Knows Best was cancelled in 1960. She was married at 16, and separated by 18. She became a drug addict, and was institutionalized for mental health issues. Eventually, she was arrested on criminal charges (forgery).
The veneer of morality means nothing. Read about Victorian England and you'll see VERY quickly what I mean.
Well, some might argue that we were already in a state of moral decline by 1960, so the fact that Lumpy and Kathy engaged in supposedly "immoral" activities after those shows, that would confirm such a view.
No one is saying that everything was idyllic or perfect back in the old days. Sure, one can probably find a good deal of anecdotal evidence of moral turpitude in previous eras, but I'm not sure that it proves that society was any more or less moral than it is now. The perception being addressed in your OP would suggest that there are conflicting views and variant definitions of how "morality" is defined, along with how that definition has developed and changed over the past century or more.
In the past, morality was seemingly viewed as "black and white," whereas nowadays, people are far more accepting of the "gray area" than they used to be.
Society has changed, but that is not indicative of a moral decline. I am, right now, talking to people all around the world. My grandfather couldn't. He spoke to his neighbours. One of whom he liked and the other who he thought was a 'bloody fool'.
Perhaps, although the phenomenon started long before the advent of the internet. Perhaps it started with television, although it could also be due to greater mobility and people not living in the same neighborhoods for as long as they used to. The population seems a lot more transient these days, not staying in one place long enough to put down roots or get to know those around them.
As a moral issue, I've read some people lament about how there is a growing lack of community and how the spirit of volunteerism and public service has been in decline. I recall an article I read a while back about how various public service organizations (Lions, Kiwanis, Rotary Club, etc.) are seeing declining membership, while they were once a mainstay in every community.
Another example which often comes to mind is that there is a certain section of the downtown area and vicinity which has a certain "hippie-esque" vibe to it. Former hippies and others of that particular bent became shopkeepers and business owners along a certain nostalgic 60s "leftish" theme, yet this same group of business owners are the loudest voices in wanting the local government to use the police to get rid of transients, homeless people, and other assorted "bums" who they believe are hurting their businesses.
They betrayed their principles which they once touted and held close to heart - all for the sake of profit, no different than the right-wing capitalists they claim to oppose, and yet...
This may also be seen as a decline in morality, as selfishness, narcissism, materialism, consumerism, and greed have become more prevalent, while any sense of community or earlier ideals of "fight the power" or "question authority" have fallen by the wayside.
I don't lock my back door, generally. It's literally wide open right now, despite no-one being home. My best friend is the same.
My wife doesn't lock her car.
Funny thing is that my parents, who live in the country and talk about how much safer it is, think we're being ridiculous. Perception or reality?
My wife's mother is horrified that we might let our girls walk home from school unaccompanied soon, but often talks about how her kids (inc my wife) would roam around on Saturdays while their father was playing football.
To her, this is because society is more dangerous now, and she doesn't trust people not to abduct the kids. So are there more child abductions now than when she was letting her kids roam?
BBC News - How stranger danger changed the way children play
Do you live out in the country or in some low-crime area? A lot of people in America live in gated communities or have some sort of private security service. In some areas, I see how property owners make a point of posting signs on their property to let people know that they're being protected by some private security company. Or there might be Neighborhood Watch signs posted in the area. This has also become more common, growing out of the crime waves which took place in the 70s and 80s which led to a public backlash and calls to "take a bite out of crime."
Programs such as this, as well as strong public support for anti-crime measures, the militarization of police departments, "three strikes" laws, "stand your ground" laws, and an exponential increase in incarcerations (shown in the chart I posted upthread) - this no doubt had an effect on eventually lowering the crime rate. The rate of violent crime peaked in the early 1990s, but since then, it has shown a noticeable decline.
But even that wouldn't be an indication of morality becoming better or worse. Many have lamented the excesses of the police and the rise of surveillance and other security measures being taken, especially since 9/11. We sometimes hear horror stories of elderly women in wheelchairs and diapers being given strip searches at airport security checkpoints. And then, Trump's strident calls to "build the wall" are all part of the same hysteria. It's the same reason why so many Americans want to keep and bear firearms. It's all done in the name of taking a bite out of crime.
I used to walk to school on my own - even in rough areas in the 1970s when the crime rate was much higher than now. But nowadays, most parents drive their kids to school.
Comparing the anecdotal mom and pop general store in Podunk again provides skewed perception. The stores near me don't have height markers. They have video in many cases, but that is because it's cheap and accessible. In the past, the option wasn't as readily available, or available at all.
It's hard to find hard data, but 'Retail Crime, Security and Loss Prevention: An Encyclopedic Reference' is worth a look.
It might be worth looking at, but back 100 years ago, more people were living in rural or semi-rural conditions anyway. The cities were viewed as overcrowded, slummy, dirty, crime-ridden "dens of iniquity." I recall reading how some cities (like NYC) had raw sewage running down the streets with people crowded into tenements.
However, all four of my grandparents were born on farms, so they were spared such horrors in their youth. They were certainly aware of the immorality of the cities, even back in those days, but when people speak of moral decline in the modern sense, it's implied that the "city mentality" has pervaded all throughout the country.
Really?
Carlill v Carbolic Smoke Ball Co - Wikipedia
Borg-Warner Corp. v. Anchor Coupling Co.
Davis v. General Foods Corporation, 21 F. Supp. 445 (S.D.N.Y. 1937)
My point here is not that things are exactly the same as they ever were. They are not. The world changes. But the essential nature of people does not simply change. Whilst we might 'remember' how much more trustworthy people were in the past, we are likely judging the people around us. I try hard to surround myself with trustworthy people today. How representative are they of society?
It's a form of ingroup bias, basically.
Maybe, although one thing to consider is that, overall, populations have grown larger and people are more urbanized and transient than they once were. It was a lot more difficult to be dishonest with neighbors you expected to see every day in a small town where people know each other. This leads to the question of whether it's even "natural" for humans to live in such large numbers in crowded urban conditions. I recall some earlier social psychology experiments using rats and putting them in their own "city" which became overcrowded and horrible.
What we're seeing today, in terms of population growth, urbanization, industrialization - this is all unprecedented. We've never had anything like this in recorded history before.
It may or may not indicate anything about our "essential nature," but it may be a confirmation that people are products of their environment and the societies they're born and raised in. And as you noted about "perceptions" (skewed or otherwise), these are merely part of humans' responses to their environment and what they're faced with on a daily basis. If humans do immoral things, it's only because "everyone else is doing it."
This may be why people often look at popular culture as helping to shape the environment which may lead to human perceptions of it which may shape the view that society is in a moral decline.
So, is there too much litigation these days? Sure, it would appear so to me. But this isn't due to a moral decline. And people 'back in the day' might have liked to seal a deal with a firm handshake (and I'm ignoring here who was actually entitled to MAKE deals, which is a bigger moral change to me) but reality is that contracts were broken.
It could be argued that too much litigation is a symptom of moral decline. If everything was so hunky-dory, no one would have any reason to sue one another. Of course, "back in the day," people and communities were said to have been more self-reliant - back when they didn't have to depend on "big gov" to solve their problems.
People solved their own problems in their own ways, but that too has been called into question, especially when it involved people taking the law into their own hands. A small, close-knit community might single out and shun people who "didn't belong" or were considered a "bad influence." So, there was that ugly side that you mentioned. I don't deny that, but it's also the reason why I tend to be more collectivist and far-left in my overall philosophy. It's the only real way for people to peacefully coexist in an urban, industrialized society under diverse, multiracial, multicultural conditions.
If we want "individualism" and "self-reliance" (which themselves are often seen as moral principles), without the interference of "big gov" (as many modern capitalists proclaim), then we'll have to go back to the days of people resolving their own problems on their own. Some people actually want that (such as the growing alt-right), and they might perceive it as the "lesser of two evils" compared to what we have now.