For Mark Wahlberg, being a father to teenage children in real life played an immense role in his approach to "Joe Bell," a film that centers on a true story of one dad’s quest -- to not only accept who his son is -- but honor his death after a tragic set of circumstances. The "Spenser Confidential" actor, 50, portrays the blue-collar dad from Oregon who makes it a mission to spread the message of anti-bullying after losing his 15-year-old teenage son, Jadin Bell, to suicide in 2013.