Human Slingshot with the Four Towers Bussines Area behind during the presentation of the film "Angry Birds" at Hipodromo de Zarzuela in Madrid. April 25,2016. (ALTERPHOTOS/Borja B.Hojas) during the presentation of the film "Angry Birds" at Hipodromo de Zarzuela in Madrid. April 25,2016. (ALTERPHOTOS/Borja B.Hojas)