I never really thought of it that way but is does fit.
Many will think that they should be, by default of age 18, permitted to carry without question and it is their right under the second amendment.
While this is true and you are able to carry at age 18, state laws permitting, it does not mean that you have earned the trust of the people around you that have been alive much longer.
Trust and respect is not something given to you... you have to earn it!!
Being polite is a way to achieve both. Even when the soccer mom is berating you and accusing you of shortcomings elsewhere....