This is a non-American prison movie about a guy’s first day as a prison guard, which gets caught up in a riot, and then tries to fit in with the rest of the inmates. He has a pregnant wife.The leader of the prisoners is a bald guy if I remember correctly.
Just a guess…”Cell 211″(2009) aka “Celda 211”
http://www.imdb.com/title/tt1242422/