Look out for war below

South America | Bolivia's latest demonstrations chased off the country's president and may lead to wider violence | Priya Abraham

If Bolivia's chief supreme court justice is amazed at his own unexpected rise to the national presidency, he knows better than to believe he is in charge. That distinction belongs to a cabal of union leaders and leftists who have paralyzed the country for a month with street protests. After succeeding in forcing out President Carlos Mesa in early June after 19 months in office, they pledged to stop the demonstrations—but threatened to restart at any moment.

The breather at least allowed Bolivians to restock on dwindling stores of food and gasoline in major cities. Street protests, complete with hurled sticks of dynamite and demonstrator-manned roadblocks, are not news. The land-locked Andean nation has grappled with civil unrest for decades. Even so, the latest round has longtime observers and missionaries saying it is the worst they have ever seen.