Shocking images: the violence behind the screen

You didn't think about it, and yet, for no apparent reason, this image returns to your mind, in the form of intrusive thoughts, nightmares or anxiety. Whether you're professionally confronted with the horrors of war, pedo-crime or the harshness of migration, or you stumble across photos or videos of extreme violence online, shocking images and stories can be traumatic. How do we live when these images populate our daily lives?