The choreographer leading a Lebanese dance troupe that shot to fameby winning the ‘America’s Got Talent’ TV contest castigated Lebanese politicians and called for revolution upon landing back in Beirut Friday. Dozens of relatives offered the Mayyas troupe flowers at Beirut airport while thousands of Lebanese were glued to their televisions to catch a glimpse of the performers who filled them with pride and joy in a country wrecked by nearly three years of economic crisis. “We don’t need you (politicians), Mayyas made Lebanon proud without your help” choreographer Nadim Cherfan told AFP at Beir…