This blogpost has a couple of blogposts about eyewitness. There is an issue with eyewitness. They seem to tell different stories of the same event.
There is a lot to tell about this. For now, check out this website and take 6 minutes of your time to watch this funny video. I guarantee you will learn something from it.
For the Dutch speakers this is an interesting article by Vrij Nederland about eyewitness who saw the terror attack in Nice.