It is not okay to laugh at someone when they are trying to tell you how they feel about something. If it is a nervous laugh then tell the other person that. Why can't human beings be more respectful. Open your mind up. Think about a situation from someone else's perspective. There isn't just one way to do, see, or say something. We are unique beings.
I need space when I am angry or upset. Some people need to hash it our right then and there.
Respect is a huge thing that we are all missing in this world. We all need to take the time to slow down and think about what others are going through. What someone else is trying to say. This world is too cruel and unkind to have more people that are selfish, disrespectful, and close-minded.