Quote from r75:
"Perhaps I am getting old but someone just walking about filming such scenes..."
That would indeed be callous, but perhaps we shouldn't jump to conclusions in this case. The photographer and a companion are clearly investigating at least one crushed car, and discussing if there's anything they can do to help. We don't know what the camera was, or how it was being held. It might even be a head-mounted camera, as may also have been used by the hotelier who stalked the Tunis gunman, although I don't know if they are available with a zoom lens. I believe the emergency services are increasingly using similar devices themselves.