Police officers in the US face 12.9 fatalities per 100,000 workers. In comparison, construction workers see 14.3, agricultural workers see 17.7, farmers and ranchers around 24 and truck drivers 26.9.
As for the rest of your argument, if the 'fine' police officers don't do anything to stand up to the bad police officers or adhere to the blue wall of silence: Then they are not fine people.
I can understand how it might feel scary, though. Just because they don't have much worse outcomes than the average American of their demographic doesn't mean that they don't have more terrifying experiences than average. That's not an excuse, though. Abusive parents are often reacting to past trauma that was inflicted on them, but we still shouldn't allow them to abuse their children. Protecting the public in a constitutional way needs to be the top priority. Officer safety and wellbeing come close behind, but they should still always be in second place.