Sorry, I really don't understand what you are referring to here. Could you be more clear?
Actually, they also publish manifestos and sometimes release videos, but that is neither here nor there.
They don't consider it to be merely a political statement. The consider it part of their greater war. So, they are willing to murder innocents as part of their greater war. Do you think we should murder innocents as part of our war against them? [If you can answer this question, we might move quite a bit further along in discussing this issue.]
By the way, I am talking about murder here, such as would have been the case in the initial article with the soldiers in Afghanistan, had they committed it, which thankfully, they did not.