I must say, I have a special place in my heart for the children who still think that people with different opinions are angry with them.
It's about how they present their opinions, not what they are.
Consider the following:
Exhibit A:
"I am not sure if I understood your argument entirely. Could you elaborate?"
Exhibit B:
"You will find I only reply to complete answers. I hereby sternly demand that you provide me with more information, because I'm too lazy to search for it. Also, your opinion is a stupid fantasy and I have a special place in my heart for you because you are so cute in a slightly funny way."
Exhibit B is displaying large amounts of anger and is committing one of the seven deadly sins. Exhibit A, on the other hand, is polite.