Zastavarian,
The response of people to your firearm isn't so much a commentary on your firearm (or the perceived threat that some feel from it), but rather is a commentary on the wholesale rudeness, dehumanization, and abusive behavior that has become acceptable in today's society.
People treat each other like trash these days. There is no civility in most of our culture--people working for slave wages in dead-end jobs under sadistic power-hungry petty tyrants tend to take out their frustrations on their customers because they can get away with it.
The public has become so beaten-down that they put up with abuse from service workers, government officials, and bureaucrats as a matter of course. There is no mechanism by which we may counter such abuse, and so people tend to just meet like with like--rude people cause EVERYONE to be generally rude.
Road rage... the DMV... Drive-throughs... government officials who lie, cheat, steal, and are corrupt beyond imagination without apology or shame... Thugs roam the streets preying on whomever they wish, and do not fear the police, the courts, or the citizenry. There is no accountability in our culture, and everyone seems to think that EVERYONE is as helpless, battered, abused, and powerless as they feel.
Carrying a firearm is a MAJOR break from the status quo. It is a statement that you have claimed PERSONAL responsibility for your own safety and security.
It tells the thugs that you are NOT the person they want to mug.
It tells the government that you understand the TRUE power dynamic of a Republic--the PEOPLE hold the power because there are a LOT more of us than them, and MOST of us are armed, trained, and are passionately jealous about guarding our freedom and liberty.
It tells petty commercial tyrants and spiteful wage-slaves that you are a strong, self-assured, and aware citizen, and NOT just another brow-beaten sheeple to be trifled with or abused.
If others feel threatened by your firearm, then that's their problem. If they feel upset, then it's most likely NOT because of the gun itself, but rather because it reminds them that they have relinquished their own freedom and safety to an "authority" that has neither the duty or the legal obligation to provide that for them.
Be cordial, polite, and friendly when you carry. Hold doors for people. Say "sir" and "ma'am". Say "please" and "thank you". Smile at people.
Don;t talk about crime statistics, or recent robberies and muggings, or other negative events. Speak of love--love of your own life, love of family, love of a peaceful community--when people ask why you carry.
Because it's AWFULLY difficult for even the most frothing, anti-gun sheeple to argue with love.
Eventually, the Public will come around...