Group: 591 killed in Venezuela prisons last year  Venezuela's
latest bloody prison clash came after a year in which 591
inmates were killed in the country's troubled prisons, the
deadliest toll yet during President Hugo Chavez's 14-year
government, a watchdog group said Thursday.  The Venezuelan
Prisons Observatory released last year's death toll nearly a
week after fierce gunfire erupted at Uribana prison in the
western city of Barquisimeto. The government said 58 people were
killed on Friday when armed inmates clashed with National Guard
troops who were attempting to carry out an inspection. Nearly
all of those killed were prisoners.  The number of deaths in
prison riots and other violence in 2012 was up about 5 percent
from the previous year, and up about 24 percent over the number
killed in 2010. The group also said 1,132 inmates were injured
in prison violence during 2012.  Human rights groups called for
a thorough investigation into Friday's violence and said the
authorities used excessive force.  The r