By Ueslei Marcelino MANAUS, Brazil (Reuters) - Brazil's justice minister on Tuesday proposed an overhaul of the penal system to tackle chronic prison overcrowding a day after 56 inmates were massacred in the deadliest riot in two decades. The minister, Alexandre de Moraes, said Brazil needed to improve conditions in jails, which are home to an estimated 600,000 inmates, after visiting the prison in the jungle city of Manaus where violence erupted between rival drug gangs. In an incident that shocked even Brazilians inured to regular outbreaks of prison violence, machete-wielding gangs decapitated inmates on Monday and threw their bodies over a wall of the penitentiary, which houses more than three times its capacity.
