Complex sentence: In 1986 Cooley, becoming deeply disgusted by the people he worked for after being given a contract to kill a police officer, approached the U.S. Justice Department's Organized Crime Strike Force and declared, I'd like to help you destroy the First Ward.
Split into simpler sentences: In 1986 Cooley, became disgusted by the people he worked for after being given a contract to kill a police officer. He approached the U.S. Justice Department's Organized Crime Strike Force and declared, I'd like to help you destroy the First Ward.