Keith Haring came to Barcelona and paint this a wall in 27/02/1989. This video-screener is a part of the movie that was filmed by Dj Chito de Melero (Barcelona). The place is Plaça Salvador Seguí (Raval), now this place does not exist.
The paint was there some years and then these building was destroyed to build another newone.
The museum MACBA made a copy of the original and painted it next to the museum (around 1997). After some years, they buff this copy and change it for some grey modern/contemporaneus paint(or just grey), next to Chillida.
Check the video here: