Critics say last year's massive election victory was marred by fraud and corruption and that the pope must beware of allowing his visit, sponsored by the state, to be seen as legitimizing an authoritarian regime. The bishops in Angola twice have denounced the government for leaving its people mired in poverty while leaders enrich themselves off oil and diamonds.  Since he arrived on Friday from Cameroon, the pope has met with dos Santos and spoken out against corruption in Africa, the continent with the fastest-growing Catholic population in the world.