I had that same question
"LA PAZ. New condemnations of U.S. interference, a massive popular march and the unexpected reappearance of the vice president, Carlos Mesa, who has confirmed his split with the government, revealed the intensity of the Bolivian crisis today. Arsenio Álvarez, leader of the Federation of Press Workers in La Paz as well as Jaime Solares and Roberto de la Cruz, leaders of the Bolivian Workers Union (COB) and the trade union in the neighboring municipality of El Alto respectively, condemned U.S. interference that is seeking to maintain President Gonzalo Sánchez de Lozada in power despite a fierce social demand for him to resign, reported PL. This demand was the overwhelming theme today in the largest demonstration ever seen in the Bolivian capital, when some 120,000 people called on the president to stand down, according to figures released by the Catholic Fides radio station."