Treme is set in post-Katrina New Orleans and it slowly makes you fall in love with the city. New Orleans has its problems, like crooked cops and politicians, but the heart of the show is the people who live in the Treme, a neighborhood in New Orleans known for it's musical roots. I especially love all the club scenes where New Orleans gets to show off its live music.
Treme requires a little time so be patient with it. Think of the show as a great novel instead of a cop procedural. I hope you give it a shot.