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. In his closing argument to the jury, Assistant U.S. Attorney David L. Axelrod, one of the prosecutors...