That's super-great that you've studied Aristotle's three modes of appeal. Pity you don't understand them.
I haven't appealed to pathos at all.
If atrocities are being committed by ISIS, the world needs to know. I'm all for independently corroborating reports and photos. For example, the photo of the headless girl may have been taken after Syria bombed Yemen. But among those accusing ISIS of atrocities is Iraq's minister of human rights. Reports are coming in from all over the world. I think it's foolish to knee-jerk assume that none of the reports is true.
All digital camera's now a days embed metadata in the image. There are programs like this http://regex.info/exif.cgi?imgurl= online or you can download free, that can quickly find out any metadata on the photo, including dates and oftentimes GPS coordinates. I would never rely on what you hear in a forum. There are also other quick ways to vetting an image or even a story but that is for a separate thread.
I don't know if the pics are authentic or not.... but the lack of blood on the beheaded girl seems odd.
I can tell you that I do not get my information from the mainstream media. I live and work in the Middle East and I have contacts all over the region. Most of the media scare mongering over things happening their is orientalist nonsense. However, if anything they are downplaying just how horrific ISIS is. They are also not like Asad, Saddam Hussein, or Qaddafi. Those men are/were interested in only protecting and furthering their own power and wealth. They did horrible things to ensure that, but their ambitions were limited. The Islamic State on the other hand has no limitations on their ambitions. They want to establish a global caliphate. These are dangerous and evil men, and people are right to fear them.
I'm a Tarte, what!! You want some of this??
To argue with a man who has renounced his reason is like giving medicine to the dead. -- Thomas Paine