A protester was killed in Paraguay after a secret Senate vote for a constitutional amendment that would allow President Horacio Cartes to run for re-election sparked violent clashes and the country’s Congress was stormed and set alight. Rodrigo Quintana, 25, was killed by a rubber bullet fired by police in the headquarters of the liberal youth activist group, the Paraguayan opposition said. On Saturday activists were arriving in Paraguay’s capital Asuncion from the landlocked country’s interior in a sign the violent protests that resulted in a fire in the first floor of Congress on Friday could continue. Cartes called for calm and a rejection of violence in a statement released on Twitter. He promised the government would do its best to maintain order.