Augmented Reality is a term these days most often associated with people running around perceiving the world through the screens of their mobile phones. That’s not the case in this Dutch campaign against aggression towards public workers though.
By merging the live feed of a camera recording the street in front of the billboard (part of the Rembrandt square) with a recording of violence against medical personnel, passers-by are confronted with what they look like when they just stand there doing nothing while people are being beaten up in front of them. Judging from the reactions of people in the video, it appears to be quite effective.
Source: popsci.com.