Humanity does not fundamentally change in the span of a few generations, so I think we should look to a combination of external factors:
- The cheap price of consumer goods (enabled by our willingness to look the other way on sweatshop labor) has driven materialism to new highs, leading to more widespread building of status for purchase, and the resulting feelings of status anxiety. More competition and less community.
- Electronics have added great stress to many peoples’ lives due to not being able to disengage and take a brain break (from work, from passive aggressive calls from Mom, from neighborhood feuds, etc). That daily stress increases poor treatment of the people and things around them.
- The chunk of people who only treated others well because of religion (like, out of fear of going to hell) has been freed from that constraint by the decline in religious belief (which is still likely a net good for society…).
- Automatic, monopolization, and the spread of corporate culture have taken the humanity and flexibility out of customer services that a lot of people use on a daily basis, the mood equivalent of wearing a hair shirt.
- A large portion of society (at least in the US) grew up observing that people who looked like them (white men) had social privilege over other types of people and that certain people in their lives like a wife would be there to cater to their needs. As equality and acceptance of gay people, women, people of color, etc have grown, some of these men feel discomfited and resentful of the clash in expectation vs reality, and act annoying in a day to day way because of it (hot dog throwing reminded me of this).
- Many people tailor their behavior to their environment—how they see the people around them acting. Our environment today spans the globe because mass media and the Internet allow us to see people everywhere on display, and more people watch when more shocking things are shown. So we all see people “like us” acting like wild beasts and it changes our context.
- All these things and others have led to a race to the bottom where the decline of behavior builds on itself.