buenos air argentina sentence 29 people nickname like blond angel death tiger life sentence wednesday trial involve 800 case kidnap torture murder 1976-1983 dictatorship many defendants include former navy captain alfredo astiz captain jorge acosta already serve life sentence dirty war crimes commit esma naval mechanics school convert clandestine prison torture center first time so-called esma mega-case however wednesday sentence include convictions death flight people drug body dump river plate give sedatives love ones flight throw river sea unbelievable dismal say lita boitano head relatives disappear detain political reason boitano lose two children dictatorship among hundreds people gather outside federal courthouse buenos air listen convictions take three hours read addition life sentence 19 people receive jail term eight 25 years six clear wrongdoing include juan alemann finance minister dictatorship one civilians accuse plan right abuse human right group estimate argentina military government kill 30,000 people dictatorship body never find 5,000 dissidents hold esma 200 people know survive initial 68 defendants die trial start 2012. astiz convict absentia europe kill two french nuns hold esma open public human right memorial 2007. argentina prosecute many dictatorship-era crimes last year convict 15 ex-military officials conspire kidnap assassinate leftist dissidents part operation condor program supreme court rule early year decrease jail time convict human right abuse spur protest stoke fear backslide argentine court sentence 29 life dictatorship crimes