One time I saw a rude letter to the editor in a certain paper, in regards to a story that someone wrote about their trip. And the person writing the letter practically said 'who cares.'
Now is this neccessary? No. Not only that, but it's also hurtful to the author. I understand the letter writer can write what he want's, but should he? No, not if it's unneccessarily hurtful. This wasn't even a political article where people have different views and write in. Just a story. It's fine for the person to not find the story interesting. But to actually insult the author is not right.
This happened a long time ago and it's bygones already. The point is though that sometimes people think more about what they can and want to do and not enough about what they should do. Which makes for a very selfish attitude because it's like saying, I can say what I want and I don't care that you feel hurt.
I think that besides their rights, people should also think about their obligation towards others.