With the loss of United States support, the regime grew more desperate. An anti-Siad Barre demonstration on July 6, 1990, at a soccer match in the main stadium deteriorated into a riot, causing Siad Barre's bodyguard to panic and open fire on the demonstrators. At least sixty-five people were killed. A week later, while the city reeled from the impact of what came to be called the Stadia Corna Affair, Siad Barre sentenced to death 46 prominent members of the Manifesto Group, a body of 114 notables who had signed a petition in May calling for elections and improved human rights. During the show trial that resulted in the death sentences, demonstrators surrounded the court and activity in the city came to a virtual halt. On July 13, a shaken Siad Barre dropped the charges against the accused. As the city celebrated victory, Siad Barre, conceding defeat for the first time in twenty years, retreated into his bunker at the military barracks near the airport.