Complex sentence: It introduces the stevedores of the Baltimore port and an international smuggling organization led by a figure known only as "The Greek", while continuing to examine the drug-dealing Barksdale Organization and the Baltimore Police Department.
Split into simpler sentences: It introduces the stevedores (dockworkers) of the Port of Baltimore and an international organized crime operation led by a figure known only as "The Greek". Like, it continues to examine the drug-dealing Barksdale crew and the Baltimore Police Department.