I'm not sure I would say the people who kill themselves, or others, deserve no sympathy, but you're right. These people are ****ed in the head if they are doing these things, more so than anything to do with Iraq has done. Does that lessen the tragedy of it at all? No, I don't think so, but not only are you technically correct in saying that their opinions are not something you can present in court you are right in saying the hanging cannot be blamed for their deaths.
Conversely, the issue came about because of a pirate video showing more than the news did. My understanding is suicide is not allowed to be shown in the event it puts the idea in people's heads. Maybe it's a similar story here.