CARACAS - Two generals declared themselves in rebellion against President Hugo Chávez on Wednesday, deepening the mood of political tension gripping Venezuela as the country's oil exports ground to a halt and anti-government protesters carried out the second day of a general strike. Late Wednesday, the country's largest labor confederation announced it would continue the strike indefinitely. Throughout the day, the National Guard fortified its presence on the streets as scattered riots and raucous demonstrations erupted across Caracas and in provincial cities. The National Guard also took over two office buildings belonging to the state oil company, protesting employees said....