The eight figures are incredibly dynamic and the sculpture soon went viral.
Horn, who is of Colombian and Venezuelan descent, has been blown away by the reaction.
It was a welcome surprise for Horn, who has created many public art pieces in Philadelphia.
Each figure is made of aluminum plates that are cut out in topographic forms.
That eternal question is what makes it impossible to look away.
The alley was the perfect spot for that; a message of resistance.
Miguel Antonio Horn created a stunning public sculpture in Philadelphia titleContraFuerte.
A special Instagram account he set up shows his creative process in making the large sculpture.
A post shared by ContraFuerte (@contrafuertephl)