Eh, I think it's just you tend not to notice the good ones. The middle school bully on a power trip hiding behind a badge on the other hand... He's kind of hard to miss.
I've dealt with both, that's for sure. I'm the "Yes officer. Yes sir. Thank you. Have a nice day" guy when I'm dealing with LEOs, their job is difficult and dangerous enough as it is. I've still been yelled at, cursed at, accused of lying, accused of being drunk... And that was just in one routine traffic stop on my way to work on a Tuesday morning. Most of the other run-ins (both traffic stops, and stupid teenage things)I don't remember much about, because everything progressed in a perfectly professional and reasonable manner.