You should be polite to family members.
Artie is at a thanksgiving dinner with his extended family when his aunt begins expressing a lot of controversial opinions.
Artie wants to respond to his aunt.
Artie tells his aunt that while he doesn't agree with her opinions, they can disagree with each other in a respectful manner.
Artie tells his aunt that her ideas are ignorant and that only a stupid person would believe them.
His aunt tones down her rhetoric a little bit and becomes more susceptible to hearing Artie's counter-arguments.
His aunt feels extremely insulted, and she storms out to her car and goes home, making the rest of the dinner awkward.