Rob Marshall’s energetic, whipsaw-paced 2002 movie version of the long-running musical Chicago is a provocative examination of fame, betrayal, and the cynical manipulations of the media, politicians, and lawyers. In 2018, it’s almost a song-by-song primer, preparing us for the evening news. And with Renee Zellweger as headline-grabbing murderess Roxie Hart, competing for media attention and juror sympathy with Catherine Zeta-Jones’ equally deadly Velma Kelly, this Chicago is packed with talent, as well as with the songs of John Kander and Fred Ebb. Shown unedited and uninterrupted tonight on HBO, it’s a good place, as well as time, to revisit Chicago …