Behaviour that causes other people discomfort is considered wrong.
Sandra, who speaks Spanish, is out with some friends at a restaurant, including some others that speak Spanish.
Sandra wants to talk with her friends.
Sandra talks in a language that everyone understands and involves them in conversation.
Sandra talks in Spanish with the friends that speak Spanish, enjoying a lively conversation.
All of her friends join in and have a great and memorable conversation during their meal.
The other friends feel left out and become both suspicious and jealous of Sandra.