I don't know if I would say that the cops are bad in the traditional sense. I think that some of these cops are suffering from ptsd or some type of anxiety order from being afraid of being shot whenever they pull someone over. Police work is actually a lot safer than a lot of jobs but if everyone tells you "you have to worry all the time about being shot or killed" you will probably start believing it at some point and become very aggressive towards any perceived threat..
The 10 Deadliest Jobs: Deaths per 100,000
1. Logging workers: 128.8
2. Fishers and related fishing workers: 117
3. Aircraft pilot and flight engineers: 53.4
4. Roofers: 40.5
5. Structural iron and steel workers: 37
6. Refuse and recyclable material collectors: 27.1
7. Electrical power-line installers and repairers: 23
8. Drivers/sales workers and truck drivers: 22.1
9. Farmers, ranchers, and other agricultural managers: 21.3
10. Construction laborers: 17.4
Out of approximately one million police and law enforcement personnel, with 126 deaths per year, the death rate for police is
12.6 per hundred thousand.
http://www.huffingtonpost.com/blake-fleetwood/how-dangerous-is-police-w_b_6373798.html