The Fronline series is one of my favorite TV programs to watch in the United States. Many of these investigative documentary films are available for online viewing. You should watch an episode or two to get a feel for what matters in politics and culture.
Tokyo Nancy Snow 
I’m not familiar with Frontline but I like investigative documentary films and investigative films because these always reflect the society. Like the kinds of crime and reasons why people commit it. Theses things change depending on the times.