South American leaders told Bolivia's rebel governors to cease violent protests and strongly backed leftist President Evo Morales, who left an emergency summit in Chile and headed home on Tuesday for talks with his opponents. At least 16 people died last week in impoverished Bolivia as Morales' opponents clashed with his supporters, blocked highways, sabotaged natural gas pipelines and sacked government buildings. In Buenos Aires, leftist groups groups and Bolivians marched through the streets in support of Morales.