Alex "Reds" Rivera, a suspected drug kingpin who once kept a petting zoo of farm animals in his Kensington neighborhood, has been convicted of heading a narcotics network that for years distributed heroin and cocaine along North Lawrence Street and West Indiana Avenue. A federal jury handed up its verdict Monday night, capping a two-week trial that included testimony from several of Rivera's top associates, dozens of secretly recorded conversations, and surveillance and law enforcement reports of controlled drug buys from Rivera and others....