I definitely agree with the spirit of your post. I am working on becoming an LEO myself and I feel that sometimes hasty generalizations are made about all those who serve based on isolated experiences.
At the same time though, one man's "polite but unmoving defense of his rights" equals another man's "hostile and belligerent attitude." Remember, there is no such thing as an impartial observer -- doesn't matter how polite and friendly you are, some soccer moms will always vilify you for exercising your rights.
All the OCers I have met personally are always on their best behavior while carrying and I salute them for it!