This is the second of a two-part column. The first part was published on Monday.The racketeering class action Wacker Drive Executive Suites is pursuing against property manager Jones Lang LaSalle presented U.S. Magistrate Judge Sunil R. Harjani with significant questions about extortion under the Hobbs Act and the crucial distinction between legitimate and unlawful use of economic fear.Executive Suites, called WDES, leased …