Really?
I tell ya what, I'll go head to head with you and will match any story you can find about drunk commercial pilots. I'll match it will 20 stories about misconduct and criminal behavior by cops.
I'll happily show you wrong, your exception, not the rule statement...
Perhaps I should have made another analogy. How many commercial pilots make mistakes in the cockpit? How many get on their computers and read while they're supposed to be piloting the aircraft? How many pilots have boinked a flight attendant in the cockpit? How many have dozed off in flight? How many pilots have landed at the wrong airport? How many pilots have crashed planes due to "pilot error?
Don't you see? The blame game doesn't work. We probably agree that there are "bad apples" in all professions. Then, you have to take into account the nature of the job. Cops have frequent confrontations with people who are in the midst of trouble, either as a victim of crime or as a perpetrator. Take your job and try to picture yourself on every flight having to deal with an unruly passenger, one who hasn't been checked for weapons. Wouldn't that be a fun job?
As I've said in many other posts, cops are people. They come from the human race. They make mistakes. Some are criminals. Some are unsuited for the job. Some are incompetent. Same is true for pilots.