Bolivian President Carlos Mesa gives a speech during a ceremony to celebrate an anniversary of the Colorados Presidential Guard in La Paz May 30, 2005. La Paz residents expected a week of escalating demonstrations in the current crisis over the future of its massive natural gas resources, as hundreds of poor Bolivians arrived by truck and bus in the government seat to pressure the government for the nationalisation of the industry. REUTERS/Jose Luis Quintana JMG/PN