(ANSA) - BELGRADE, FEB 13 - Greenpeace activists unfurled a banner from a 60-meter-high construction crane in front of the Munich Security Conference. Ten climbers climbed the crane and attached a banner that read, "Free yourselves from tyrants." According to a Greenpeace statement reported by Bild, the activists want to highlight Europe's reliance on Russia and the United States for liquefied natural gas. Greenpeace has announced additional protests at the conference, and at least 21 demonstrations are planned in Munich, with an estimated 120,000 people attending. (ANSA).