"The society of late twentieth century America is perhaps the first in human history where most grown men do not routinely bear arms on their persons and boys are not regularly raised from childhood to learn skill in the use of some kind of weapon, either for community or personal defense - club or spear, broadsword or long bow, rifle or Bowie knife. It also happens to be one of the rudest and crudest societies in history, having jubilantly swept most of the etiquette of speech, table, dress, hospitality, fairness, deference to authority and the relations of male and female and child and elder under the fraying and filthy carpet of politically convenient illusions. With little fear of physical reprisal Americans can be as loud, gross, disrespectful, pushy, and negligent as they please. If more people carried rapiers at their belts, or revolvers on their hips, It is a fair bet you would be able to go to a movie and enjoy he dialogue from the screen without having to endure the small talk, family gossip and assorted bodily noises that many theater audiences these days regularly emit. Today, discourtesy is commonplace precisely because there is no price to pay for it."
As Heinlein put it,
"An armed society is a polite society."