...... but I would assume that the lack of education plays a big part. If the new ones are trained by other more experienced officers which themselves, might not really know or follow the rules, these experiences are handed down to the new ones, which in many cases I assume will do as they are taught and the wheel keeps turning.
Found this, which is from a police officer worrying about it as well.
"We are very far behind. It's problematic that we have 18,000 different police departments and there are no national standards," said Haberfeld, who was previously a police lieutenant in Israel.
In the U.S., training to be a police officer, and carry a gun on behalf of the state, ranges from as few as 10 weeks to as much as 36 weeks. It's a far cry from the years of education required in most western European countries and others around the world.
Haberfeld, who has written several books on international police practices, standards and ethics, said two countries that stand out for their police training are Finland and Norway.
Officers in both countries must attend their nations' three-year police universities, and leave with degrees that are equivalent to a bachelor's.
Rune Glomseth, a professor at the Norwegian police university, Politihøgskolen, said policing is approached as an academic discipline. "It's the same quality of education that we have for teachers, nurses, and so on," said Glomseth, who was also a police officer for three decades.
The first year of police education in Norway is focused on the role of police in society and ethics. In the second year, students shadow training officers, before returning full time for a third year focused on investigations and completing a thesis paper.
Haberfeld said in many U.S. police departments, the stereotype is that officers in the prime of their careers try to avoid the burden of training rookies. What's left, she said, is aging officers who themselves haven't been through training in decades, young cops who haven't gotten enough experience, or she said, bad cops who get stuck with the assignment.
"Different departments have different incentives to sort of convince officers to do it, but the bottom line is that in many departments the worst officers are the ones training," Haberfeld said.